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Finding the Fourth Proportional to 123,243.57, 170,076.24 and 66,654.95

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Solution

The fourth proportional to 123,243.57, 170,076.24 and 66,654.95 is: 91,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,243.57 : 170,076.24 = 66,654.95 : x
  2. Step 2: Convert to fraction form
    123,243.57/170,076.24 = 66,654.95/x
  3. Step 3: Cross multiply
    123,243.57x = 170,076.24 × 66,654.95
  4. Step 4: Simplify right side
    123,243.57x = 11,336,422,423.01
  5. Step 5: Solve for x
    x = 11,336,422,423.01/123,243.57
  6. Step 6: Final answer
    x = 91,983.89

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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.