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Finding the Fourth Proportional to 124.79, 186.87 and 88.34

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Solution

The fourth proportional to 124.79, 186.87 and 88.34 is: 132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.79 : 186.87 = 88.34 : x
  2. Step 2: Convert to fraction form
    124.79/186.87 = 88.34/x
  3. Step 3: Cross multiply
    124.79x = 186.87 × 88.34
  4. Step 4: Simplify right side
    124.79x = 16,507.16
  5. Step 5: Solve for x
    x = 16,507.16/124.79
  6. Step 6: Final answer
    x = 132.28

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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.