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Finding the Fourth Proportional to 123,142.65, 169,934.45 and 69,426.59

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Solution

The fourth proportional to 123,142.65, 169,934.45 and 69,426.59 is: 95,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,142.65 : 169,934.45 = 69,426.59 : x
  2. Step 2: Convert to fraction form
    123,142.65/169,934.45 = 69,426.59/x
  3. Step 3: Cross multiply
    123,142.65x = 169,934.45 × 69,426.59
  4. Step 4: Simplify right side
    123,142.65x = 11,797,968,190.22
  5. Step 5: Solve for x
    x = 11,797,968,190.22/123,142.65
  6. Step 6: Final answer
    x = 95,807.33

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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.