Home / 154,421.80-231,632.70-54,581.20

Finding the Fourth Proportional to 154,421.80, 231,632.70 and 54,581.20

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Solution

The fourth proportional to 154,421.80, 231,632.70 and 54,581.20 is: 81,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.80 : 231,632.70 = 54,581.20 : x
  2. Step 2: Convert to fraction form
    154,421.80/231,632.70 = 54,581.20/x
  3. Step 3: Cross multiply
    154,421.80x = 231,632.70 × 54,581.20
  4. Step 4: Simplify right side
    154,421.80x = 12,642,790,725.24
  5. Step 5: Solve for x
    x = 12,642,790,725.24/154,421.80
  6. Step 6: Final answer
    x = 81,871.80

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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.