Home / 115,207.85-158,987.17-66,819.11

Finding the Fourth Proportional to 115,207.85, 158,987.17 and 66,819.11

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Solution

The fourth proportional to 115,207.85, 158,987.17 and 66,819.11 is: 92,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,207.85 : 158,987.17 = 66,819.11 : x
  2. Step 2: Convert to fraction form
    115,207.85/158,987.17 = 66,819.11/x
  3. Step 3: Cross multiply
    115,207.85x = 158,987.17 × 66,819.11
  4. Step 4: Simplify right side
    115,207.85x = 10,623,380,238.84
  5. Step 5: Solve for x
    x = 10,623,380,238.84/115,207.85
  6. Step 6: Final answer
    x = 92,210.56

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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.