Home / 91,572.92-137,181.17-67,513.40

Finding the Fourth Proportional to 91,572.92, 137,181.17 and 67,513.40

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Solution

The fourth proportional to 91,572.92, 137,181.17 and 67,513.40 is: 101,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,572.92 : 137,181.17 = 67,513.40 : x
  2. Step 2: Convert to fraction form
    91,572.92/137,181.17 = 67,513.40/x
  3. Step 3: Cross multiply
    91,572.92x = 137,181.17 × 67,513.40
  4. Step 4: Simplify right side
    91,572.92x = 9,261,566,685.56
  5. Step 5: Solve for x
    x = 9,261,566,685.56/91,572.92
  6. Step 6: Final answer
    x = 101,138.71

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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.