Home / 285,961.12-428,662.75-136,161.16

Finding the Fourth Proportional to 285,961.12, 428,662.75 and 136,161.16

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Solution

The fourth proportional to 285,961.12, 428,662.75 and 136,161.16 is: 204,108.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,961.12 : 428,662.75 = 136,161.16 : x
  2. Step 2: Convert to fraction form
    285,961.12/428,662.75 = 136,161.16/x
  3. Step 3: Cross multiply
    285,961.12x = 428,662.75 × 136,161.16
  4. Step 4: Simplify right side
    285,961.12x = 58,367,217,288.79
  5. Step 5: Solve for x
    x = 58,367,217,288.79/285,961.12
  6. Step 6: Final answer
    x = 204,108.93

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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.