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Finding the Fourth Proportional to 123,732.48, 170,751.30 and 67,143.87

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Solution

The fourth proportional to 123,732.48, 170,751.30 and 67,143.87 is: 92,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,732.48 : 170,751.30 = 67,143.87 : x
  2. Step 2: Convert to fraction form
    123,732.48/170,751.30 = 67,143.87/x
  3. Step 3: Cross multiply
    123,732.48x = 170,751.30 × 67,143.87
  4. Step 4: Simplify right side
    123,732.48x = 11,464,903,089.53
  5. Step 5: Solve for x
    x = 11,464,903,089.53/123,732.48
  6. Step 6: Final answer
    x = 92,658.80

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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.