Home / 84,078,002.20-126,117,003.30-82,188,434.20

Finding the Fourth Proportional to 84,078,002.20, 126,117,003.30 and 82,188,434.20

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Solution

The fourth proportional to 84,078,002.20, 126,117,003.30 and 82,188,434.20 is: 123,282,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,078,002.20 : 126,117,003.30 = 82,188,434.20 : x
  2. Step 2: Convert to fraction form
    84,078,002.20/126,117,003.30 = 82,188,434.20/x
  3. Step 3: Cross multiply
    84,078,002.20x = 126,117,003.30 × 82,188,434.20
  4. Step 4: Simplify right side
    84,078,002.20x = 10,365,359,027,223,232
  5. Step 5: Solve for x
    x = 10,365,359,027,223,232/84,078,002.20
  6. Step 6: Final answer
    x = 123,282,651.30

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Double scale
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Similar ratio
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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.