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Finding the Fourth Proportional to 124.04, 185.30 and 102.68

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Solution

The fourth proportional to 124.04, 185.30 and 102.68 is: 153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.04 : 185.30 = 102.68 : x
  2. Step 2: Convert to fraction form
    124.04/185.30 = 102.68/x
  3. Step 3: Cross multiply
    124.04x = 185.30 × 102.68
  4. Step 4: Simplify right side
    124.04x = 19,026.60
  5. Step 5: Solve for x
    x = 19,026.60/124.04
  6. Step 6: Final answer
    x = 153.39

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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.