Home / 125,984.20-188,717.10-86,585.80

Finding the Fourth Proportional to 125,984.20, 188,717.10 and 86,585.80

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Solution

The fourth proportional to 125,984.20, 188,717.10 and 86,585.80 is: 129,700.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,984.20 : 188,717.10 = 86,585.80 : x
  2. Step 2: Convert to fraction form
    125,984.20/188,717.10 = 86,585.80/x
  3. Step 3: Cross multiply
    125,984.20x = 188,717.10 × 86,585.80
  4. Step 4: Simplify right side
    125,984.20x = 16,340,221,077.18
  5. Step 5: Solve for x
    x = 16,340,221,077.18/125,984.20
  6. Step 6: Final answer
    x = 129,700.56

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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.