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Finding the Fourth Proportional to 132,430.80, 198,492.60 and 53,493.20

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Solution

The fourth proportional to 132,430.80, 198,492.60 and 53,493.20 is: 80,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,430.80 : 198,492.60 = 53,493.20 : x
  2. Step 2: Convert to fraction form
    132,430.80/198,492.60 = 53,493.20/x
  3. Step 3: Cross multiply
    132,430.80x = 198,492.60 × 53,493.20
  4. Step 4: Simplify right side
    132,430.80x = 10,618,004,350.32
  5. Step 5: Solve for x
    x = 10,618,004,350.32/132,430.80
  6. Step 6: Final answer
    x = 80,177.76

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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.