Home / 209,728.65-289,439.16-124,834.17

Finding the Fourth Proportional to 209,728.65, 289,439.16 and 124,834.17

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Solution

The fourth proportional to 209,728.65, 289,439.16 and 124,834.17 is: 172,279.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,728.65 : 289,439.16 = 124,834.17 : x
  2. Step 2: Convert to fraction form
    209,728.65/289,439.16 = 124,834.17/x
  3. Step 3: Cross multiply
    209,728.65x = 289,439.16 × 124,834.17
  4. Step 4: Simplify right side
    209,728.65x = 36,131,897,304.10
  5. Step 5: Solve for x
    x = 36,131,897,304.10/209,728.65
  6. Step 6: Final answer
    x = 172,279.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.