Home / 156,266,123.20-215,651,209.61-85,704,542.88

Finding the Fourth Proportional to 156,266,123.20, 215,651,209.61 and 85,704,542.88

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Solution

The fourth proportional to 156,266,123.20, 215,651,209.61 and 85,704,542.88 is: 118,274,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,266,123.20 : 215,651,209.61 = 85,704,542.88 : x
  2. Step 2: Convert to fraction form
    156,266,123.20/215,651,209.61 = 85,704,542.88/x
  3. Step 3: Cross multiply
    156,266,123.20x = 215,651,209.61 × 85,704,542.88
  4. Step 4: Simplify right side
    156,266,123.20x = 18,482,288,340,549,684
  5. Step 5: Solve for x
    x = 18,482,288,340,549,684/156,266,123.20
  6. Step 6: Final answer
    x = 118,274,440.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.