Home / 132,511.05-198,691.04-90,442.06

Finding the Fourth Proportional to 132,511.05, 198,691.04 and 90,442.06

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Solution

The fourth proportional to 132,511.05, 198,691.04 and 90,442.06 is: 135,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,511.05 : 198,691.04 = 90,442.06 : x
  2. Step 2: Convert to fraction form
    132,511.05/198,691.04 = 90,442.06/x
  3. Step 3: Cross multiply
    132,511.05x = 198,691.04 × 90,442.06
  4. Step 4: Simplify right side
    132,511.05x = 17,970,026,690.52
  5. Step 5: Solve for x
    x = 17,970,026,690.52/132,511.05
  6. Step 6: Final answer
    x = 135,611.53

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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.