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Finding the Fourth Proportional to 127,182.78, 175,512.99 and 79,463.88

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Solution

The fourth proportional to 127,182.78, 175,512.99 and 79,463.88 is: 109,660.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,182.78 : 175,512.99 = 79,463.88 : x
  2. Step 2: Convert to fraction form
    127,182.78/175,512.99 = 79,463.88/x
  3. Step 3: Cross multiply
    127,182.78x = 175,512.99 × 79,463.88
  4. Step 4: Simplify right side
    127,182.78x = 13,946,943,175.80
  5. Step 5: Solve for x
    x = 13,946,943,175.80/127,182.78
  6. Step 6: Final answer
    x = 109,660.63

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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.