Home / 113,786.20-170,679.30-80,543.80

Finding the Fourth Proportional to 113,786.20, 170,679.30 and 80,543.80

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Solution

The fourth proportional to 113,786.20, 170,679.30 and 80,543.80 is: 120,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,786.20 : 170,679.30 = 80,543.80 : x
  2. Step 2: Convert to fraction form
    113,786.20/170,679.30 = 80,543.80/x
  3. Step 3: Cross multiply
    113,786.20x = 170,679.30 × 80,543.80
  4. Step 4: Simplify right side
    113,786.20x = 13,747,159,403.34
  5. Step 5: Solve for x
    x = 13,747,159,403.34/113,786.20
  6. Step 6: Final answer
    x = 120,815.70

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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.