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Finding the Fourth Proportional to 123,342.70, 170,245.80 and 69,659.14

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Solution

The fourth proportional to 123,342.70, 170,245.80 and 69,659.14 is: 96,148.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,342.70 : 170,245.80 = 69,659.14 : x
  2. Step 2: Convert to fraction form
    123,342.70/170,245.80 = 69,659.14/x
  3. Step 3: Cross multiply
    123,342.70x = 170,245.80 × 69,659.14
  4. Step 4: Simplify right side
    123,342.70x = 11,859,176,016.61
  5. Step 5: Solve for x
    x = 11,859,176,016.61/123,342.70
  6. Step 6: Final answer
    x = 96,148.18

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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.