Home / 154,024.80-231,037.20-87,439.20

Finding the Fourth Proportional to 154,024.80, 231,037.20 and 87,439.20

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Solution

The fourth proportional to 154,024.80, 231,037.20 and 87,439.20 is: 131,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,024.80 : 231,037.20 = 87,439.20 : x
  2. Step 2: Convert to fraction form
    154,024.80/231,037.20 = 87,439.20/x
  3. Step 3: Cross multiply
    154,024.80x = 231,037.20 × 87,439.20
  4. Step 4: Simplify right side
    154,024.80x = 20,201,707,938.24
  5. Step 5: Solve for x
    x = 20,201,707,938.24/154,024.80
  6. Step 6: Final answer
    x = 131,158.80

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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.