Home / 109,617.20-164,425.80-80,092.70

Finding the Fourth Proportional to 109,617.20, 164,425.80 and 80,092.70

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Solution

The fourth proportional to 109,617.20, 164,425.80 and 80,092.70 is: 120,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,617.20 : 164,425.80 = 80,092.70 : x
  2. Step 2: Convert to fraction form
    109,617.20/164,425.80 = 80,092.70/x
  3. Step 3: Cross multiply
    109,617.20x = 164,425.80 × 80,092.70
  4. Step 4: Simplify right side
    109,617.20x = 13,169,306,271.66
  5. Step 5: Solve for x
    x = 13,169,306,271.66/109,617.20
  6. Step 6: Final answer
    x = 120,139.05

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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.