Home / 132,137.92-182,290.80-78,425.20

Finding the Fourth Proportional to 132,137.92, 182,290.80 and 78,425.20

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Solution

The fourth proportional to 132,137.92, 182,290.80 and 78,425.20 is: 108,191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,137.92 : 182,290.80 = 78,425.20 : x
  2. Step 2: Convert to fraction form
    132,137.92/182,290.80 = 78,425.20/x
  3. Step 3: Cross multiply
    132,137.92x = 182,290.80 × 78,425.20
  4. Step 4: Simplify right side
    132,137.92x = 14,296,192,448.16
  5. Step 5: Solve for x
    x = 14,296,192,448.16/132,137.92
  6. Step 6: Final answer
    x = 108,191.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.