Home / 126,929.85-175,242.96-81,686.64

Finding the Fourth Proportional to 126,929.85, 175,242.96 and 81,686.64

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Solution

The fourth proportional to 126,929.85, 175,242.96 and 81,686.64 is: 112,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,929.85 : 175,242.96 = 81,686.64 : x
  2. Step 2: Convert to fraction form
    126,929.85/175,242.96 = 81,686.64/x
  3. Step 3: Cross multiply
    126,929.85x = 175,242.96 × 81,686.64
  4. Step 4: Simplify right side
    126,929.85x = 14,315,008,586.05
  5. Step 5: Solve for x
    x = 14,315,008,586.05/126,929.85
  6. Step 6: Final answer
    x = 112,778.90

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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.