Home / 147,517.80-221,079-138,069.96

Finding the Fourth Proportional to 147,517.80, 221,079 and 138,069.96

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Solution

The fourth proportional to 147,517.80, 221,079 and 138,069.96 is: 206,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,517.80 : 221,079 = 138,069.96 : x
  2. Step 2: Convert to fraction form
    147,517.80/221,079 = 138,069.96/x
  3. Step 3: Cross multiply
    147,517.80x = 221,079 × 138,069.96
  4. Step 4: Simplify right side
    147,517.80x = 30,524,368,686.84
  5. Step 5: Solve for x
    x = 30,524,368,686.84/147,517.80
  6. Step 6: Final answer
    x = 206,919.90

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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.