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Finding the Fourth Proportional to 124,120.80, 171,288.16 and 67,532.64

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Solution

The fourth proportional to 124,120.80, 171,288.16 and 67,532.64 is: 93,195.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,120.80 : 171,288.16 = 67,532.64 : x
  2. Step 2: Convert to fraction form
    124,120.80/171,288.16 = 67,532.64/x
  3. Step 3: Cross multiply
    124,120.80x = 171,288.16 × 67,532.64
  4. Step 4: Simplify right side
    124,120.80x = 11,567,541,645.54
  5. Step 5: Solve for x
    x = 11,567,541,645.54/124,120.80
  6. Step 6: Final answer
    x = 93,195.84

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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.