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Finding the Fourth Proportional to 125,310.39, 172,928.57 and 68,722.17

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Solution

The fourth proportional to 125,310.39, 172,928.57 and 68,722.17 is: 94,836.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,310.39 : 172,928.57 = 68,722.17 : x
  2. Step 2: Convert to fraction form
    125,310.39/172,928.57 = 68,722.17/x
  3. Step 3: Cross multiply
    125,310.39x = 172,928.57 × 68,722.17
  4. Step 4: Simplify right side
    125,310.39x = 11,884,026,241.79
  5. Step 5: Solve for x
    x = 11,884,026,241.79/125,310.39
  6. Step 6: Final answer
    x = 94,836.72

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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.