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Finding the Fourth Proportional to 125,728.32, 173,541.84 and 74,776.92

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Solution

The fourth proportional to 125,728.32, 173,541.84 and 74,776.92 is: 103,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,728.32 : 173,541.84 = 74,776.92 : x
  2. Step 2: Convert to fraction form
    125,728.32/173,541.84 = 74,776.92/x
  3. Step 3: Cross multiply
    125,728.32x = 173,541.84 × 74,776.92
  4. Step 4: Simplify right side
    125,728.32x = 12,976,924,286.33
  5. Step 5: Solve for x
    x = 12,976,924,286.33/125,728.32
  6. Step 6: Final answer
    x = 103,214.01

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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.