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Finding the Fourth Proportional to 125,034.64, 172,546.64 and 67,672.80

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Solution

The fourth proportional to 125,034.64, 172,546.64 and 67,672.80 is: 93,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,034.64 : 172,546.64 = 67,672.80 : x
  2. Step 2: Convert to fraction form
    125,034.64/172,546.64 = 67,672.80/x
  3. Step 3: Cross multiply
    125,034.64x = 172,546.64 × 67,672.80
  4. Step 4: Simplify right side
    125,034.64x = 11,676,714,174.80
  5. Step 5: Solve for x
    x = 11,676,714,174.80/125,034.64
  6. Step 6: Final answer
    x = 93,387.84

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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.