Home / 154,056.80-231,085.20-87,471.20

Finding the Fourth Proportional to 154,056.80, 231,085.20 and 87,471.20

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Solution

The fourth proportional to 154,056.80, 231,085.20 and 87,471.20 is: 131,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,056.80 : 231,085.20 = 87,471.20 : x
  2. Step 2: Convert to fraction form
    154,056.80/231,085.20 = 87,471.20/x
  3. Step 3: Cross multiply
    154,056.80x = 231,085.20 × 87,471.20
  4. Step 4: Simplify right side
    154,056.80x = 20,213,299,746.24
  5. Step 5: Solve for x
    x = 20,213,299,746.24/154,056.80
  6. Step 6: Final answer
    x = 131,206.80

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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.