Home / 113,387,387.31-156,391,046.55-85,511,270.97

Finding the Fourth Proportional to 113,387,387.31, 156,391,046.55 and 85,511,270.97

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Solution

The fourth proportional to 113,387,387.31, 156,391,046.55 and 85,511,270.97 is: 117,942,546.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,387,387.31 : 156,391,046.55 = 85,511,270.97 : x
  2. Step 2: Convert to fraction form
    113,387,387.31/156,391,046.55 = 85,511,270.97/x
  3. Step 3: Cross multiply
    113,387,387.31x = 156,391,046.55 × 85,511,270.97
  4. Step 4: Simplify right side
    113,387,387.31x = 13,373,197,158,818,934
  5. Step 5: Solve for x
    x = 13,373,197,158,818,934/113,387,387.31
  6. Step 6: Final answer
    x = 117,942,546.13

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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.