Home / 147,912.30-221,868.45-54,405.90

Finding the Fourth Proportional to 147,912.30, 221,868.45 and 54,405.90

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Solution

The fourth proportional to 147,912.30, 221,868.45 and 54,405.90 is: 81,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,912.30 : 221,868.45 = 54,405.90 : x
  2. Step 2: Convert to fraction form
    147,912.30/221,868.45 = 54,405.90/x
  3. Step 3: Cross multiply
    147,912.30x = 221,868.45 × 54,405.90
  4. Step 4: Simplify right side
    147,912.30x = 12,070,952,703.86
  5. Step 5: Solve for x
    x = 12,070,952,703.86/147,912.30
  6. Step 6: Final answer
    x = 81,608.85

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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.