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Finding the Fourth Proportional to 124.48, 187.04 and 115.36

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Solution

The fourth proportional to 124.48, 187.04 and 115.36 is: 173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.48 : 187.04 = 115.36 : x
  2. Step 2: Convert to fraction form
    124.48/187.04 = 115.36/x
  3. Step 3: Cross multiply
    124.48x = 187.04 × 115.36
  4. Step 4: Simplify right side
    124.48x = 21,576.93
  5. Step 5: Solve for x
    x = 21,576.93/124.48
  6. Step 6: Final answer
    x = 173.34

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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.