Home / 154,119.20-231,211.20-87,504.80

Finding the Fourth Proportional to 154,119.20, 231,211.20 and 87,504.80

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Solution

The fourth proportional to 154,119.20, 231,211.20 and 87,504.80 is: 131,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,119.20 : 231,211.20 = 87,504.80 : x
  2. Step 2: Convert to fraction form
    154,119.20/231,211.20 = 87,504.80/x
  3. Step 3: Cross multiply
    154,119.20x = 231,211.20 × 87,504.80
  4. Step 4: Simplify right side
    154,119.20x = 20,232,089,813.76
  5. Step 5: Solve for x
    x = 20,232,089,813.76/154,119.20
  6. Step 6: Final answer
    x = 131,275.60

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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.