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Finding the Fourth Proportional to 123,213.68, 170,036.84 and 69,499.77

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Solution

The fourth proportional to 123,213.68, 170,036.84 and 69,499.77 is: 95,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,213.68 : 170,036.84 = 69,499.77 : x
  2. Step 2: Convert to fraction form
    123,213.68/170,036.84 = 69,499.77/x
  3. Step 3: Cross multiply
    123,213.68x = 170,036.84 × 69,499.77
  4. Step 4: Simplify right side
    123,213.68x = 11,817,520,073.84
  5. Step 5: Solve for x
    x = 11,817,520,073.84/123,213.68
  6. Step 6: Final answer
    x = 95,910.78

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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.