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Finding the Fourth Proportional to 86,920,480,906.20, 130,380,721,359.30 and 86,920,480,906.20

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Solution

The fourth proportional to 86,920,480,906.20, 130,380,721,359.30 and 86,920,480,906.20 is: 130,380,721,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920,480,906.20 : 130,380,721,359.30 = 86,920,480,906.20 : x
  2. Step 2: Convert to fraction form
    86,920,480,906.20/130,380,721,359.30 = 86,920,480,906.20/x
  3. Step 3: Cross multiply
    86,920,480,906.20x = 130,380,721,359.30 × 86,920,480,906.20
  4. Step 4: Simplify right side
    86,920,480,906.20x = 11,332,755,001,447,618,183,168
  5. Step 5: Solve for x
    x = 11,332,755,001,447,618,183,168/86,920,480,906.20
  6. Step 6: Final answer
    x = 130,380,721,359.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.