Home / 147,937.20-221,468.40-139,286.40

Finding the Fourth Proportional to 147,937.20, 221,468.40 and 139,286.40

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Solution

The fourth proportional to 147,937.20, 221,468.40 and 139,286.40 is: 208,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,937.20 : 221,468.40 = 139,286.40 : x
  2. Step 2: Convert to fraction form
    147,937.20/221,468.40 = 139,286.40/x
  3. Step 3: Cross multiply
    147,937.20x = 221,468.40 × 139,286.40
  4. Step 4: Simplify right side
    147,937.20x = 30,847,536,149.76
  5. Step 5: Solve for x
    x = 30,847,536,149.76/147,937.20
  6. Step 6: Final answer
    x = 208,517.78

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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.