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Finding the Fourth Proportional to 124.91, 187.53 and 104.87

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Solution

The fourth proportional to 124.91, 187.53 and 104.87 is: 157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.91 : 187.53 = 104.87 : x
  2. Step 2: Convert to fraction form
    124.91/187.53 = 104.87/x
  3. Step 3: Cross multiply
    124.91x = 187.53 × 104.87
  4. Step 4: Simplify right side
    124.91x = 19,666.27
  5. Step 5: Solve for x
    x = 19,666.27/124.91
  6. Step 6: Final answer
    x = 157.44

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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.