Home / 128,248.90-192,376.66-60,765.10

Finding the Fourth Proportional to 128,248.90, 192,376.66 and 60,765.10

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Solution

The fourth proportional to 128,248.90, 192,376.66 and 60,765.10 is: 91,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.90 : 192,376.66 = 60,765.10 : x
  2. Step 2: Convert to fraction form
    128,248.90/192,376.66 = 60,765.10/x
  3. Step 3: Cross multiply
    128,248.90x = 192,376.66 × 60,765.10
  4. Step 4: Simplify right side
    128,248.90x = 11,689,786,982.57
  5. Step 5: Solve for x
    x = 11,689,786,982.57/128,248.90
  6. Step 6: Final answer
    x = 91,149.22

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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.