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Finding the Fourth Proportional to 84,301.78, 126,080.67 and 75,007.03

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Solution

The fourth proportional to 84,301.78, 126,080.67 and 75,007.03 is: 112,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,301.78 : 126,080.67 = 75,007.03 : x
  2. Step 2: Convert to fraction form
    84,301.78/126,080.67 = 75,007.03/x
  3. Step 3: Cross multiply
    84,301.78x = 126,080.67 × 75,007.03
  4. Step 4: Simplify right side
    84,301.78x = 9,456,935,966.71
  5. Step 5: Solve for x
    x = 9,456,935,966.71/84,301.78
  6. Step 6: Final answer
    x = 112,179.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.