Home / 209,320.80-288,761.14-124,377.72

Finding the Fourth Proportional to 209,320.80, 288,761.14 and 124,377.72

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Solution

The fourth proportional to 209,320.80, 288,761.14 and 124,377.72 is: 171,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,320.80 : 288,761.14 = 124,377.72 : x
  2. Step 2: Convert to fraction form
    209,320.80/288,761.14 = 124,377.72/x
  3. Step 3: Cross multiply
    209,320.80x = 288,761.14 × 124,377.72
  4. Step 4: Simplify right side
    209,320.80x = 35,915,452,217.80
  5. Step 5: Solve for x
    x = 35,915,452,217.80/209,320.80
  6. Step 6: Final answer
    x = 171,580.90

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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.