Home / 154,086.30-231,129.45-79,101.90

Finding the Fourth Proportional to 154,086.30, 231,129.45 and 79,101.90

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Solution

The fourth proportional to 154,086.30, 231,129.45 and 79,101.90 is: 118,652.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,086.30 : 231,129.45 = 79,101.90 : x
  2. Step 2: Convert to fraction form
    154,086.30/231,129.45 = 79,101.90/x
  3. Step 3: Cross multiply
    154,086.30x = 231,129.45 × 79,101.90
  4. Step 4: Simplify right side
    154,086.30x = 18,282,778,640.96
  5. Step 5: Solve for x
    x = 18,282,778,640.96/154,086.30
  6. Step 6: Final answer
    x = 118,652.85

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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.