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Finding the Fourth Proportional to 123,173.87, 169,979.24 and 69,459.32

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Solution

The fourth proportional to 123,173.87, 169,979.24 and 69,459.32 is: 95,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,173.87 : 169,979.24 = 69,459.32 : x
  2. Step 2: Convert to fraction form
    123,173.87/169,979.24 = 69,459.32/x
  3. Step 3: Cross multiply
    123,173.87x = 169,979.24 × 69,459.32
  4. Step 4: Simplify right side
    123,173.87x = 11,806,643,023.11
  5. Step 5: Solve for x
    x = 11,806,643,023.11/123,173.87
  6. Step 6: Final answer
    x = 95,853.48

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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.