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Finding the Fourth Proportional to 127,494.39, 175,979.35 and 85,052.82

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Solution

The fourth proportional to 127,494.39, 175,979.35 and 85,052.82 is: 117,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,494.39 : 175,979.35 = 85,052.82 : x
  2. Step 2: Convert to fraction form
    127,494.39/175,979.35 = 85,052.82/x
  3. Step 3: Cross multiply
    127,494.39x = 175,979.35 × 85,052.82
  4. Step 4: Simplify right side
    127,494.39x = 14,967,539,979.27
  5. Step 5: Solve for x
    x = 14,967,539,979.27/127,494.39
  6. Step 6: Final answer
    x = 117,397.64

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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.