Home / 123,168.28-169,972.14-66,579.66

Finding the Fourth Proportional to 123,168.28, 169,972.14 and 66,579.66

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Solution

The fourth proportional to 123,168.28, 169,972.14 and 66,579.66 is: 91,879.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,168.28 : 169,972.14 = 66,579.66 : x
  2. Step 2: Convert to fraction form
    123,168.28/169,972.14 = 66,579.66/x
  3. Step 3: Cross multiply
    123,168.28x = 169,972.14 × 66,579.66
  4. Step 4: Simplify right side
    123,168.28x = 11,316,687,290.67
  5. Step 5: Solve for x
    x = 11,316,687,290.67/123,168.28
  6. Step 6: Final answer
    x = 91,879.88

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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.