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Finding the Fourth Proportional to 126,882.80, 190,615.92 and 89,528.96

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Solution

The fourth proportional to 126,882.80, 190,615.92 and 89,528.96 is: 134,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,882.80 : 190,615.92 = 89,528.96 : x
  2. Step 2: Convert to fraction form
    126,882.80/190,615.92 = 89,528.96/x
  3. Step 3: Cross multiply
    126,882.80x = 190,615.92 × 89,528.96
  4. Step 4: Simplify right side
    126,882.80x = 17,065,645,077.04
  5. Step 5: Solve for x
    x = 17,065,645,077.04/126,882.80
  6. Step 6: Final answer
    x = 134,499.28

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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.