Home / 154,000.20-231,000.30-142,480.20

Finding the Fourth Proportional to 154,000.20, 231,000.30 and 142,480.20

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Solution

The fourth proportional to 154,000.20, 231,000.30 and 142,480.20 is: 213,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.20 : 231,000.30 = 142,480.20 : x
  2. Step 2: Convert to fraction form
    154,000.20/231,000.30 = 142,480.20/x
  3. Step 3: Cross multiply
    154,000.20x = 231,000.30 × 142,480.20
  4. Step 4: Simplify right side
    154,000.20x = 32,912,968,944.06
  5. Step 5: Solve for x
    x = 32,912,968,944.06/154,000.20
  6. Step 6: Final answer
    x = 213,720.30

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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.