Home / 154,059.20-231,121.20-87,444.80

Finding the Fourth Proportional to 154,059.20, 231,121.20 and 87,444.80

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Solution

The fourth proportional to 154,059.20, 231,121.20 and 87,444.80 is: 131,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,059.20 : 231,121.20 = 87,444.80 : x
  2. Step 2: Convert to fraction form
    154,059.20/231,121.20 = 87,444.80/x
  3. Step 3: Cross multiply
    154,059.20x = 231,121.20 × 87,444.80
  4. Step 4: Simplify right side
    154,059.20x = 20,210,347,109.76
  5. Step 5: Solve for x
    x = 20,210,347,109.76/154,059.20
  6. Step 6: Final answer
    x = 131,185.59

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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.