Home / 147,538.60-221,379.90-68,612.20

Finding the Fourth Proportional to 147,538.60, 221,379.90 and 68,612.20

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Solution

The fourth proportional to 147,538.60, 221,379.90 and 68,612.20 is: 102,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,538.60 : 221,379.90 = 68,612.20 : x
  2. Step 2: Convert to fraction form
    147,538.60/221,379.90 = 68,612.20/x
  3. Step 3: Cross multiply
    147,538.60x = 221,379.90 × 68,612.20
  4. Step 4: Simplify right side
    147,538.60x = 15,189,361,974.78
  5. Step 5: Solve for x
    x = 15,189,361,974.78/147,538.60
  6. Step 6: Final answer
    x = 102,951.78

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1.5x scale

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.