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Finding the Fourth Proportional to 124,379.55, 171,643.05 and 67,789.71

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Solution

The fourth proportional to 124,379.55, 171,643.05 and 67,789.71 is: 93,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,379.55 : 171,643.05 = 67,789.71 : x
  2. Step 2: Convert to fraction form
    124,379.55/171,643.05 = 67,789.71/x
  3. Step 3: Cross multiply
    124,379.55x = 171,643.05 × 67,789.71
  4. Step 4: Simplify right side
    124,379.55x = 11,635,632,583.02
  5. Step 5: Solve for x
    x = 11,635,632,583.02/124,379.55
  6. Step 6: Final answer
    x = 93,549.40

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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.