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Finding the Fourth Proportional to 123,454.80, 170,367.72 and 69,739.92

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Solution

The fourth proportional to 123,454.80, 170,367.72 and 69,739.92 is: 96,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,454.80 : 170,367.72 = 69,739.92 : x
  2. Step 2: Convert to fraction form
    123,454.80/170,367.72 = 69,739.92/x
  3. Step 3: Cross multiply
    123,454.80x = 170,367.72 × 69,739.92
  4. Step 4: Simplify right side
    123,454.80x = 11,881,431,163.38
  5. Step 5: Solve for x
    x = 11,881,431,163.38/123,454.80
  6. Step 6: Final answer
    x = 96,241.14

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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.