Home / 91,572.17-137,180.05-67,512.65

Finding the Fourth Proportional to 91,572.17, 137,180.05 and 67,512.65

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Solution

The fourth proportional to 91,572.17, 137,180.05 and 67,512.65 is: 101,137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,572.17 : 137,180.05 = 67,512.65 : x
  2. Step 2: Convert to fraction form
    91,572.17/137,180.05 = 67,512.65/x
  3. Step 3: Cross multiply
    91,572.17x = 137,180.05 × 67,512.65
  4. Step 4: Simplify right side
    91,572.17x = 9,261,387,847.95
  5. Step 5: Solve for x
    x = 9,261,387,847.95/91,572.17
  6. Step 6: Final answer
    x = 101,137.59

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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.