Home / 80,510,538.20-120,765,807.30-67,755,954.20

Finding the Fourth Proportional to 80,510,538.20, 120,765,807.30 and 67,755,954.20

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Solution

The fourth proportional to 80,510,538.20, 120,765,807.30 and 67,755,954.20 is: 101,633,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,510,538.20 : 120,765,807.30 = 67,755,954.20 : x
  2. Step 2: Convert to fraction form
    80,510,538.20/120,765,807.30 = 67,755,954.20/x
  3. Step 3: Cross multiply
    80,510,538.20x = 120,765,807.30 × 67,755,954.20
  4. Step 4: Simplify right side
    80,510,538.20x = 8,182,602,508,344,826
  5. Step 5: Solve for x
    x = 8,182,602,508,344,826/80,510,538.20
  6. Step 6: Final answer
    x = 101,633,931.30

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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.