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Finding the Fourth Proportional to 125,641.76, 173,395.92 and 75,339.68

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Solution

The fourth proportional to 125,641.76, 173,395.92 and 75,339.68 is: 103,974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,641.76 : 173,395.92 = 75,339.68 : x
  2. Step 2: Convert to fraction form
    125,641.76/173,395.92 = 75,339.68/x
  3. Step 3: Cross multiply
    125,641.76x = 173,395.92 × 75,339.68
  4. Step 4: Simplify right side
    125,641.76x = 13,063,593,126.11
  5. Step 5: Solve for x
    x = 13,063,593,126.11/125,641.76
  6. Step 6: Final answer
    x = 103,974.93

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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.