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Finding the Fourth Proportional to 109.46, 151.02 and 67.45

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Solution

The fourth proportional to 109.46, 151.02 and 67.45 is: 93.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.46 : 151.02 = 67.45 : x
  2. Step 2: Convert to fraction form
    109.46/151.02 = 67.45/x
  3. Step 3: Cross multiply
    109.46x = 151.02 × 67.45
  4. Step 4: Simplify right side
    109.46x = 10,186.30
  5. Step 5: Solve for x
    x = 10,186.30/109.46
  6. Step 6: Final answer
    x = 93.06

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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.