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Finding the Fourth Proportional to 132,489.46, 198,274.92 and 126,978.22

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Solution

The fourth proportional to 132,489.46, 198,274.92 and 126,978.22 is: 190,027.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,489.46 : 198,274.92 = 126,978.22 : x
  2. Step 2: Convert to fraction form
    132,489.46/198,274.92 = 126,978.22/x
  3. Step 3: Cross multiply
    132,489.46x = 198,274.92 × 126,978.22
  4. Step 4: Simplify right side
    132,489.46x = 25,176,596,412.24
  5. Step 5: Solve for x
    x = 25,176,596,412.24/132,489.46
  6. Step 6: Final answer
    x = 190,027.16

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1.5x scale

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.