Home / 84,400,812.30-126,601,218.45-78,732,108.30

Finding the Fourth Proportional to 84,400,812.30, 126,601,218.45 and 78,732,108.30

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Solution

The fourth proportional to 84,400,812.30, 126,601,218.45 and 78,732,108.30 is: 118,098,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,400,812.30 : 126,601,218.45 = 78,732,108.30 : x
  2. Step 2: Convert to fraction form
    84,400,812.30/126,601,218.45 = 78,732,108.30/x
  3. Step 3: Cross multiply
    84,400,812.30x = 126,601,218.45 × 78,732,108.30
  4. Step 4: Simplify right side
    84,400,812.30x = 9,967,580,841,917,358
  5. Step 5: Solve for x
    x = 9,967,580,841,917,358/84,400,812.30
  6. Step 6: Final answer
    x = 118,098,162.45

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Double scale
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Similar ratio
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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.