Home / 127,320.85-175,765.10-79,589.58

Finding the Fourth Proportional to 127,320.85, 175,765.10 and 79,589.58

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Solution

The fourth proportional to 127,320.85, 175,765.10 and 79,589.58 is: 109,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,320.85 : 175,765.10 = 79,589.58 : x
  2. Step 2: Convert to fraction form
    127,320.85/175,765.10 = 79,589.58/x
  3. Step 3: Cross multiply
    127,320.85x = 175,765.10 × 79,589.58
  4. Step 4: Simplify right side
    127,320.85x = 13,989,070,487.66
  5. Step 5: Solve for x
    x = 13,989,070,487.66/127,320.85
  6. Step 6: Final answer
    x = 109,872.58

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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.