Home / 167,616.42-251,258.55-78,710.78

Finding the Fourth Proportional to 167,616.42, 251,258.55 and 78,710.78

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Solution

The fourth proportional to 167,616.42, 251,258.55 and 78,710.78 is: 117,988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,616.42 : 251,258.55 = 78,710.78 : x
  2. Step 2: Convert to fraction form
    167,616.42/251,258.55 = 78,710.78/x
  3. Step 3: Cross multiply
    167,616.42x = 251,258.55 × 78,710.78
  4. Step 4: Simplify right side
    167,616.42x = 19,776,755,195.88
  5. Step 5: Solve for x
    x = 19,776,755,195.88/167,616.42
  6. Step 6: Final answer
    x = 117,988.17

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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.