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Finding the Fourth Proportional to 125,302.55, 172,910.30 and 68,713.92

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Solution

The fourth proportional to 125,302.55, 172,910.30 and 68,713.92 is: 94,821.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,302.55 : 172,910.30 = 68,713.92 : x
  2. Step 2: Convert to fraction form
    125,302.55/172,910.30 = 68,713.92/x
  3. Step 3: Cross multiply
    125,302.55x = 172,910.30 × 68,713.92
  4. Step 4: Simplify right side
    125,302.55x = 11,881,344,177.81
  5. Step 5: Solve for x
    x = 11,881,344,177.81/125,302.55
  6. Step 6: Final answer
    x = 94,821.25

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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.