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Finding the Fourth Proportional to 124.68, 186.62 and 99.03

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Solution

The fourth proportional to 124.68, 186.62 and 99.03 is: 148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.68 : 186.62 = 99.03 : x
  2. Step 2: Convert to fraction form
    124.68/186.62 = 99.03/x
  3. Step 3: Cross multiply
    124.68x = 186.62 × 99.03
  4. Step 4: Simplify right side
    124.68x = 18,480.48
  5. Step 5: Solve for x
    x = 18,480.48/124.68
  6. Step 6: Final answer
    x = 148.22

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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.