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Finding the Fourth Proportional to 124.49, 185.47 and 118.69

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Solution

The fourth proportional to 124.49, 185.47 and 118.69 is: 176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.49 : 185.47 = 118.69 : x
  2. Step 2: Convert to fraction form
    124.49/185.47 = 118.69/x
  3. Step 3: Cross multiply
    124.49x = 185.47 × 118.69
  4. Step 4: Simplify right side
    124.49x = 22,012.67
  5. Step 5: Solve for x
    x = 22,012.67/124.49
  6. Step 6: Final answer
    x = 176.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.