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Finding the Fourth Proportional to 102.28, 141.06 and 88.52

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Solution

The fourth proportional to 102.28, 141.06 and 88.52 is: 122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.28 : 141.06 = 88.52 : x
  2. Step 2: Convert to fraction form
    102.28/141.06 = 88.52/x
  3. Step 3: Cross multiply
    102.28x = 141.06 × 88.52
  4. Step 4: Simplify right side
    102.28x = 12,486.63
  5. Step 5: Solve for x
    x = 12,486.63/102.28
  6. Step 6: Final answer
    x = 122.08

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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.