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Finding the Fourth Proportional to 125,707.60, 173,427 and 71,963.64

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Solution

The fourth proportional to 125,707.60, 173,427 and 71,963.64 is: 99,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,707.60 : 173,427 = 71,963.64 : x
  2. Step 2: Convert to fraction form
    125,707.60/173,427 = 71,963.64/x
  3. Step 3: Cross multiply
    125,707.60x = 173,427 × 71,963.64
  4. Step 4: Simplify right side
    125,707.60x = 12,480,438,194.28
  5. Step 5: Solve for x
    x = 12,480,438,194.28/125,707.60
  6. Step 6: Final answer
    x = 99,281.49

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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.