Home / 167,687.45-231,332.34-99,665.78

Finding the Fourth Proportional to 167,687.45, 231,332.34 and 99,665.78

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Solution

The fourth proportional to 167,687.45, 231,332.34 and 99,665.78 is: 137,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,687.45 : 231,332.34 = 99,665.78 : x
  2. Step 2: Convert to fraction form
    167,687.45/231,332.34 = 99,665.78/x
  3. Step 3: Cross multiply
    167,687.45x = 231,332.34 × 99,665.78
  4. Step 4: Simplify right side
    167,687.45x = 23,055,916,948.66
  5. Step 5: Solve for x
    x = 23,055,916,948.66/167,687.45
  6. Step 6: Final answer
    x = 137,493.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.