Home / 154,171.55-231,152.09-82,135.24

Finding the Fourth Proportional to 154,171.55, 231,152.09 and 82,135.24

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Solution

The fourth proportional to 154,171.55, 231,152.09 and 82,135.24 is: 123,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,171.55 : 231,152.09 = 82,135.24 : x
  2. Step 2: Convert to fraction form
    154,171.55/231,152.09 = 82,135.24/x
  3. Step 3: Cross multiply
    154,171.55x = 231,152.09 × 82,135.24
  4. Step 4: Simplify right side
    154,171.55x = 18,985,732,016.11
  5. Step 5: Solve for x
    x = 18,985,732,016.11/154,171.55
  6. Step 6: Final answer
    x = 123,146.79

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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.