Home / 80,167,151.20-120,250,726.80-68,688,025.60

Finding the Fourth Proportional to 80,167,151.20, 120,250,726.80 and 68,688,025.60

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Solution

The fourth proportional to 80,167,151.20, 120,250,726.80 and 68,688,025.60 is: 103,032,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,167,151.20 : 120,250,726.80 = 68,688,025.60 : x
  2. Step 2: Convert to fraction form
    80,167,151.20/120,250,726.80 = 68,688,025.60/x
  3. Step 3: Cross multiply
    80,167,151.20x = 120,250,726.80 × 68,688,025.60
  4. Step 4: Simplify right side
    80,167,151.20x = 8,259,785,000,857,005
  5. Step 5: Solve for x
    x = 8,259,785,000,857,005/80,167,151.20
  6. Step 6: Final answer
    x = 103,032,038.40

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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.