Home / 128,982.92-192,144.15-125,065.76

Finding the Fourth Proportional to 128,982.92, 192,144.15 and 125,065.76

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Solution

The fourth proportional to 128,982.92, 192,144.15 and 125,065.76 is: 186,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,982.92 : 192,144.15 = 125,065.76 : x
  2. Step 2: Convert to fraction form
    128,982.92/192,144.15 = 125,065.76/x
  3. Step 3: Cross multiply
    128,982.92x = 192,144.15 × 125,065.76
  4. Step 4: Simplify right side
    128,982.92x = 24,030,653,188.58
  5. Step 5: Solve for x
    x = 24,030,653,188.58/128,982.92
  6. Step 6: Final answer
    x = 186,308.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.