Home / 137,691,520.20-206,316,830.70-72,910,830.60

Finding the Fourth Proportional to 137,691,520.20, 206,316,830.70 and 72,910,830.60

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Solution

The fourth proportional to 137,691,520.20, 206,316,830.70 and 72,910,830.60 is: 109,249,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,691,520.20 : 206,316,830.70 = 72,910,830.60 : x
  2. Step 2: Convert to fraction form
    137,691,520.20/206,316,830.70 = 72,910,830.60/x
  3. Step 3: Cross multiply
    137,691,520.20x = 206,316,830.70 × 72,910,830.60
  4. Step 4: Simplify right side
    137,691,520.20x = 15,042,731,493,096,578
  5. Step 5: Solve for x
    x = 15,042,731,493,096,578/137,691,520.20
  6. Step 6: Final answer
    x = 109,249,512.76

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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.