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Finding the Fourth Proportional to 123,298.92, 169,997.60 and 100,614.87

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Solution

The fourth proportional to 123,298.92, 169,997.60 and 100,614.87 is: 138,722.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,298.92 : 169,997.60 = 100,614.87 : x
  2. Step 2: Convert to fraction form
    123,298.92/169,997.60 = 100,614.87/x
  3. Step 3: Cross multiply
    123,298.92x = 169,997.60 × 100,614.87
  4. Step 4: Simplify right side
    123,298.92x = 17,104,286,424.31
  5. Step 5: Solve for x
    x = 17,104,286,424.31/123,298.92
  6. Step 6: Final answer
    x = 138,722.11

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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.