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Finding the Fourth Proportional to 158.64, 238.86 and 124.60

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Solution

The fourth proportional to 158.64, 238.86 and 124.60 is: 187.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.64 : 238.86 = 124.60 : x
  2. Step 2: Convert to fraction form
    158.64/238.86 = 124.60/x
  3. Step 3: Cross multiply
    158.64x = 238.86 × 124.60
  4. Step 4: Simplify right side
    158.64x = 29,761.96
  5. Step 5: Solve for x
    x = 29,761.96/158.64
  6. Step 6: Final answer
    x = 187.61

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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.