Home / 154,175.15-231,157.47-82,138.83

Finding the Fourth Proportional to 154,175.15, 231,157.47 and 82,138.83

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Solution

The fourth proportional to 154,175.15, 231,157.47 and 82,138.83 is: 123,152.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,175.15 : 231,157.47 = 82,138.83 : x
  2. Step 2: Convert to fraction form
    154,175.15/231,157.47 = 82,138.83/x
  3. Step 3: Cross multiply
    154,175.15x = 231,157.47 × 82,138.83
  4. Step 4: Simplify right side
    154,175.15x = 18,987,004,131.56
  5. Step 5: Solve for x
    x = 18,987,004,131.56/154,175.15
  6. Step 6: Final answer
    x = 123,152.17

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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.