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Finding the Fourth Proportional to 125,871.39, 173,706.76 and 68,512.79

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Solution

The fourth proportional to 125,871.39, 173,706.76 and 68,512.79 is: 94,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,871.39 : 173,706.76 = 68,512.79 : x
  2. Step 2: Convert to fraction form
    125,871.39/173,706.76 = 68,512.79/x
  3. Step 3: Cross multiply
    125,871.39x = 173,706.76 × 68,512.79
  4. Step 4: Simplify right side
    125,871.39x = 11,901,134,769.46
  5. Step 5: Solve for x
    x = 11,901,134,769.46/125,871.39
  6. Step 6: Final answer
    x = 94,549.96

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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.