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Finding the Fourth Proportional to 115,591.25, 159,470.88 and 72,545.63

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Solution

The fourth proportional to 115,591.25, 159,470.88 and 72,545.63 is: 100,084.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,591.25 : 159,470.88 = 72,545.63 : x
  2. Step 2: Convert to fraction form
    115,591.25/159,470.88 = 72,545.63/x
  3. Step 3: Cross multiply
    115,591.25x = 159,470.88 × 72,545.63
  4. Step 4: Simplify right side
    115,591.25x = 11,568,914,386.85
  5. Step 5: Solve for x
    x = 11,568,914,386.85/115,591.25
  6. Step 6: Final answer
    x = 100,084.69

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1.5x scale

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.