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Finding the Fourth Proportional to 123,016.65, 169,775.51 and 75,301.53

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Solution

The fourth proportional to 123,016.65, 169,775.51 and 75,301.53 is: 103,923.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,016.65 : 169,775.51 = 75,301.53 : x
  2. Step 2: Convert to fraction form
    123,016.65/169,775.51 = 75,301.53/x
  3. Step 3: Cross multiply
    123,016.65x = 169,775.51 × 75,301.53
  4. Step 4: Simplify right side
    123,016.65x = 12,784,355,659.53
  5. Step 5: Solve for x
    x = 12,784,355,659.53/123,016.65
  6. Step 6: Final answer
    x = 103,923.78

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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.