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Finding the Fourth Proportional to 101.34, 151.26 and 85.08

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Solution

The fourth proportional to 101.34, 151.26 and 85.08 is: 126.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.34 : 151.26 = 85.08 : x
  2. Step 2: Convert to fraction form
    101.34/151.26 = 85.08/x
  3. Step 3: Cross multiply
    101.34x = 151.26 × 85.08
  4. Step 4: Simplify right side
    101.34x = 12,869.20
  5. Step 5: Solve for x
    x = 12,869.20/101.34
  6. Step 6: Final answer
    x = 126.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.