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Finding the Fourth Proportional to 148.56, 204.96 and 89.52

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Solution

The fourth proportional to 148.56, 204.96 and 89.52 is: 123.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.56 : 204.96 = 89.52 : x
  2. Step 2: Convert to fraction form
    148.56/204.96 = 89.52/x
  3. Step 3: Cross multiply
    148.56x = 204.96 × 89.52
  4. Step 4: Simplify right side
    148.56x = 18,348.02
  5. Step 5: Solve for x
    x = 18,348.02/148.56
  6. Step 6: Final answer
    x = 123.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.