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Finding the Fourth Proportional to 125,086.14, 172,645.65 and 79,753.68

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Solution

The fourth proportional to 125,086.14, 172,645.65 and 79,753.68 is: 110,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,086.14 : 172,645.65 = 79,753.68 : x
  2. Step 2: Convert to fraction form
    125,086.14/172,645.65 = 79,753.68/x
  3. Step 3: Cross multiply
    125,086.14x = 172,645.65 × 79,753.68
  4. Step 4: Simplify right side
    125,086.14x = 13,769,125,923.49
  5. Step 5: Solve for x
    x = 13,769,125,923.49/125,086.14
  6. Step 6: Final answer
    x = 110,077.15

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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.