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Finding the Fourth Proportional to 123,358.59, 170,233.59 and 69,642.36

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Solution

The fourth proportional to 123,358.59, 170,233.59 and 69,642.36 is: 96,105.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,358.59 : 170,233.59 = 69,642.36 : x
  2. Step 2: Convert to fraction form
    123,358.59/170,233.59 = 69,642.36/x
  3. Step 3: Cross multiply
    123,358.59x = 170,233.59 × 69,642.36
  4. Step 4: Simplify right side
    123,358.59x = 11,855,468,958.87
  5. Step 5: Solve for x
    x = 11,855,468,958.87/123,358.59
  6. Step 6: Final answer
    x = 96,105.74

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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.