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Finding the Fourth Proportional to 132,687.40, 199,031.10 and 126,563.80

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Solution

The fourth proportional to 132,687.40, 199,031.10 and 126,563.80 is: 189,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,687.40 : 199,031.10 = 126,563.80 : x
  2. Step 2: Convert to fraction form
    132,687.40/199,031.10 = 126,563.80/x
  3. Step 3: Cross multiply
    132,687.40x = 199,031.10 × 126,563.80
  4. Step 4: Simplify right side
    132,687.40x = 25,190,132,334.18
  5. Step 5: Solve for x
    x = 25,190,132,334.18/132,687.40
  6. Step 6: Final answer
    x = 189,845.70

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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.