Home / 154,117.20-231,208.20-87,502.80

Finding the Fourth Proportional to 154,117.20, 231,208.20 and 87,502.80

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Solution

The fourth proportional to 154,117.20, 231,208.20 and 87,502.80 is: 131,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,117.20 : 231,208.20 = 87,502.80 : x
  2. Step 2: Convert to fraction form
    154,117.20/231,208.20 = 87,502.80/x
  3. Step 3: Cross multiply
    154,117.20x = 231,208.20 × 87,502.80
  4. Step 4: Simplify right side
    154,117.20x = 20,231,364,882.96
  5. Step 5: Solve for x
    x = 20,231,364,882.96/154,117.20
  6. Step 6: Final answer
    x = 131,272.60

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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.