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Finding the Fourth Proportional to 167,921.70, 251,663.85 and 68,000.10

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Solution

The fourth proportional to 167,921.70, 251,663.85 and 68,000.10 is: 101,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,921.70 : 251,663.85 = 68,000.10 : x
  2. Step 2: Convert to fraction form
    167,921.70/251,663.85 = 68,000.10/x
  3. Step 3: Cross multiply
    167,921.70x = 251,663.85 × 68,000.10
  4. Step 4: Simplify right side
    167,921.70x = 17,113,166,966.39
  5. Step 5: Solve for x
    x = 17,113,166,966.39/167,921.70
  6. Step 6: Final answer
    x = 101,911.59

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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.