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Finding the Fourth Proportional to 124.98, 187.34 and 63.98

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Solution

The fourth proportional to 124.98, 187.34 and 63.98 is: 95.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.98 : 187.34 = 63.98 : x
  2. Step 2: Convert to fraction form
    124.98/187.34 = 63.98/x
  3. Step 3: Cross multiply
    124.98x = 187.34 × 63.98
  4. Step 4: Simplify right side
    124.98x = 11,985.08
  5. Step 5: Solve for x
    x = 11,985.08/124.98
  6. Step 6: Final answer
    x = 95.90

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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.