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Finding the Fourth Proportional to 124.30, 187.22 and 104.32

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Solution

The fourth proportional to 124.30, 187.22 and 104.32 is: 157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.30 : 187.22 = 104.32 : x
  2. Step 2: Convert to fraction form
    124.30/187.22 = 104.32/x
  3. Step 3: Cross multiply
    124.30x = 187.22 × 104.32
  4. Step 4: Simplify right side
    124.30x = 19,530.79
  5. Step 5: Solve for x
    x = 19,530.79/124.30
  6. Step 6: Final answer
    x = 157.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.