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Finding the Fourth Proportional to 132,711.80, 199,067.70 and 39,216.20

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Solution

The fourth proportional to 132,711.80, 199,067.70 and 39,216.20 is: 58,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,711.80 : 199,067.70 = 39,216.20 : x
  2. Step 2: Convert to fraction form
    132,711.80/199,067.70 = 39,216.20/x
  3. Step 3: Cross multiply
    132,711.80x = 199,067.70 × 39,216.20
  4. Step 4: Simplify right side
    132,711.80x = 7,806,678,736.74
  5. Step 5: Solve for x
    x = 7,806,678,736.74/132,711.80
  6. Step 6: Final answer
    x = 58,824.30

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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.