Home / 128,568.20-192,981.90-62,061.80

Finding the Fourth Proportional to 128,568.20, 192,981.90 and 62,061.80

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Solution

The fourth proportional to 128,568.20, 192,981.90 and 62,061.80 is: 93,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,568.20 : 192,981.90 = 62,061.80 : x
  2. Step 2: Convert to fraction form
    128,568.20/192,981.90 = 62,061.80/x
  3. Step 3: Cross multiply
    128,568.20x = 192,981.90 × 62,061.80
  4. Step 4: Simplify right side
    128,568.20x = 11,976,804,081.42
  5. Step 5: Solve for x
    x = 11,976,804,081.42/128,568.20
  6. Step 6: Final answer
    x = 93,155.26

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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.