Home / 132,138.92-198,238.64-57,271.60

Finding the Fourth Proportional to 132,138.92, 198,238.64 and 57,271.60

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Solution

The fourth proportional to 132,138.92, 198,238.64 and 57,271.60 is: 85,920.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,138.92 : 198,238.64 = 57,271.60 : x
  2. Step 2: Convert to fraction form
    132,138.92/198,238.64 = 57,271.60/x
  3. Step 3: Cross multiply
    132,138.92x = 198,238.64 × 57,271.60
  4. Step 4: Simplify right side
    132,138.92x = 11,353,444,094.62
  5. Step 5: Solve for x
    x = 11,353,444,094.62/132,138.92
  6. Step 6: Final answer
    x = 85,920.52

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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.