Home / 126,932.55-175,186.20-81,012

Finding the Fourth Proportional to 126,932.55, 175,186.20 and 81,012

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Solution

The fourth proportional to 126,932.55, 175,186.20 and 81,012 is: 111,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,932.55 : 175,186.20 = 81,012 : x
  2. Step 2: Convert to fraction form
    126,932.55/175,186.20 = 81,012/x
  3. Step 3: Cross multiply
    126,932.55x = 175,186.20 × 81,012
  4. Step 4: Simplify right side
    126,932.55x = 14,192,184,434.40
  5. Step 5: Solve for x
    x = 14,192,184,434.40/126,932.55
  6. Step 6: Final answer
    x = 111,808.87

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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.