Home / 129,210.20-193,815.30-40,490.90

Finding the Fourth Proportional to 129,210.20, 193,815.30 and 40,490.90

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Solution

The fourth proportional to 129,210.20, 193,815.30 and 40,490.90 is: 60,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,210.20 : 193,815.30 = 40,490.90 : x
  2. Step 2: Convert to fraction form
    129,210.20/193,815.30 = 40,490.90/x
  3. Step 3: Cross multiply
    129,210.20x = 193,815.30 × 40,490.90
  4. Step 4: Simplify right side
    129,210.20x = 7,847,755,930.77
  5. Step 5: Solve for x
    x = 7,847,755,930.77/129,210.20
  6. Step 6: Final answer
    x = 60,736.35

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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.