Home / 167,618.42-251,261.55-78,712.78

Finding the Fourth Proportional to 167,618.42, 251,261.55 and 78,712.78

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Solution

The fourth proportional to 167,618.42, 251,261.55 and 78,712.78 is: 117,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,618.42 : 251,261.55 = 78,712.78 : x
  2. Step 2: Convert to fraction form
    167,618.42/251,261.55 = 78,712.78/x
  3. Step 3: Cross multiply
    167,618.42x = 251,261.55 × 78,712.78
  4. Step 4: Simplify right side
    167,618.42x = 19,777,495,107.61
  5. Step 5: Solve for x
    x = 19,777,495,107.61/167,618.42
  6. Step 6: Final answer
    x = 117,991.18

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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.