Home / 154,031.80-231,047.70-87,446.20

Finding the Fourth Proportional to 154,031.80, 231,047.70 and 87,446.20

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Solution

The fourth proportional to 154,031.80, 231,047.70 and 87,446.20 is: 131,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,031.80 : 231,047.70 = 87,446.20 : x
  2. Step 2: Convert to fraction form
    154,031.80/231,047.70 = 87,446.20/x
  3. Step 3: Cross multiply
    154,031.80x = 231,047.70 × 87,446.20
  4. Step 4: Simplify right side
    154,031.80x = 20,204,243,383.74
  5. Step 5: Solve for x
    x = 20,204,243,383.74/154,031.80
  6. Step 6: Final answer
    x = 131,169.30

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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.