Home / 134,605.20-185,673-80,120.76

Finding the Fourth Proportional to 134,605.20, 185,673 and 80,120.76

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Solution

The fourth proportional to 134,605.20, 185,673 and 80,120.76 is: 110,517.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,605.20 : 185,673 = 80,120.76 : x
  2. Step 2: Convert to fraction form
    134,605.20/185,673 = 80,120.76/x
  3. Step 3: Cross multiply
    134,605.20x = 185,673 × 80,120.76
  4. Step 4: Simplify right side
    134,605.20x = 14,876,261,871.48
  5. Step 5: Solve for x
    x = 14,876,261,871.48/134,605.20
  6. Step 6: Final answer
    x = 110,517.74

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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.