Home / 99,791.17-137,711.79-68,015.57

Finding the Fourth Proportional to 99,791.17, 137,711.79 and 68,015.57

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Solution

The fourth proportional to 99,791.17, 137,711.79 and 68,015.57 is: 93,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,791.17 : 137,711.79 = 68,015.57 : x
  2. Step 2: Convert to fraction form
    99,791.17/137,711.79 = 68,015.57/x
  3. Step 3: Cross multiply
    99,791.17x = 137,711.79 × 68,015.57
  4. Step 4: Simplify right side
    99,791.17x = 9,366,545,204.01
  5. Step 5: Solve for x
    x = 9,366,545,204.01/99,791.17
  6. Step 6: Final answer
    x = 93,861.47

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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.