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Finding the Fourth Proportional to 127,807.66, 176,371.79 and 74,091.30

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Solution

The fourth proportional to 127,807.66, 176,371.79 and 74,091.30 is: 102,244.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,807.66 : 176,371.79 = 74,091.30 : x
  2. Step 2: Convert to fraction form
    127,807.66/176,371.79 = 74,091.30/x
  3. Step 3: Cross multiply
    127,807.66x = 176,371.79 × 74,091.30
  4. Step 4: Simplify right side
    127,807.66x = 13,067,615,204.43
  5. Step 5: Solve for x
    x = 13,067,615,204.43/127,807.66
  6. Step 6: Final answer
    x = 102,244.38

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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.