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Finding the Fourth Proportional to 123,637.62, 170,601.96 and 69,189.53

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Solution

The fourth proportional to 123,637.62, 170,601.96 and 69,189.53 is: 95,471.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,637.62 : 170,601.96 = 69,189.53 : x
  2. Step 2: Convert to fraction form
    123,637.62/170,601.96 = 69,189.53/x
  3. Step 3: Cross multiply
    123,637.62x = 170,601.96 × 69,189.53
  4. Step 4: Simplify right side
    123,637.62x = 11,803,868,576.47
  5. Step 5: Solve for x
    x = 11,803,868,576.47/123,637.62
  6. Step 6: Final answer
    x = 95,471.50

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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.