Home / 154,555.20-231,379.20-115,286.40

Finding the Fourth Proportional to 154,555.20, 231,379.20 and 115,286.40

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Solution

The fourth proportional to 154,555.20, 231,379.20 and 115,286.40 is: 172,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,555.20 : 231,379.20 = 115,286.40 : x
  2. Step 2: Convert to fraction form
    154,555.20/231,379.20 = 115,286.40/x
  3. Step 3: Cross multiply
    154,555.20x = 231,379.20 × 115,286.40
  4. Step 4: Simplify right side
    154,555.20x = 26,674,875,002.88
  5. Step 5: Solve for x
    x = 26,674,875,002.88/154,555.20
  6. Step 6: Final answer
    x = 172,591.25

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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.