Home / 147,912.20-221,868.30-91,815.65

Finding the Fourth Proportional to 147,912.20, 221,868.30 and 91,815.65

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Solution

The fourth proportional to 147,912.20, 221,868.30 and 91,815.65 is: 137,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,912.20 : 221,868.30 = 91,815.65 : x
  2. Step 2: Convert to fraction form
    147,912.20/221,868.30 = 91,815.65/x
  3. Step 3: Cross multiply
    147,912.20x = 221,868.30 × 91,815.65
  4. Step 4: Simplify right side
    147,912.20x = 20,370,982,178.90
  5. Step 5: Solve for x
    x = 20,370,982,178.90/147,912.20
  6. Step 6: Final answer
    x = 137,723.48

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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.