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Finding the Fourth Proportional to 132,491.60, 198,695.28 and 43,728.56

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Solution

The fourth proportional to 132,491.60, 198,695.28 and 43,728.56 is: 65,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,491.60 : 198,695.28 = 43,728.56 : x
  2. Step 2: Convert to fraction form
    132,491.60/198,695.28 = 43,728.56/x
  3. Step 3: Cross multiply
    132,491.60x = 198,695.28 × 43,728.56
  4. Step 4: Simplify right side
    132,491.60x = 8,688,658,473.20
  5. Step 5: Solve for x
    x = 8,688,658,473.20/132,491.60
  6. Step 6: Final answer
    x = 65,578.94

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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.