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Finding the Fourth Proportional to 102.23, 141.15 and 73.16

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Solution

The fourth proportional to 102.23, 141.15 and 73.16 is: 101.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.23 : 141.15 = 73.16 : x
  2. Step 2: Convert to fraction form
    102.23/141.15 = 73.16/x
  3. Step 3: Cross multiply
    102.23x = 141.15 × 73.16
  4. Step 4: Simplify right side
    102.23x = 10,326.53
  5. Step 5: Solve for x
    x = 10,326.53/102.23
  6. Step 6: Final answer
    x = 101.01

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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.