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Finding the Fourth Proportional to 101.86, 153.12 and 94.34

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Solution

The fourth proportional to 101.86, 153.12 and 94.34 is: 141.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.86 : 153.12 = 94.34 : x
  2. Step 2: Convert to fraction form
    101.86/153.12 = 94.34/x
  3. Step 3: Cross multiply
    101.86x = 153.12 × 94.34
  4. Step 4: Simplify right side
    101.86x = 14,445.34
  5. Step 5: Solve for x
    x = 14,445.34/101.86
  6. Step 6: Final answer
    x = 141.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.