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Finding the Fourth Proportional to 113.77, 170.74 and 67.53

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Solution

The fourth proportional to 113.77, 170.74 and 67.53 is: 101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.77 : 170.74 = 67.53 : x
  2. Step 2: Convert to fraction form
    113.77/170.74 = 67.53/x
  3. Step 3: Cross multiply
    113.77x = 170.74 × 67.53
  4. Step 4: Simplify right side
    113.77x = 11,530.80
  5. Step 5: Solve for x
    x = 11,530.80/113.77
  6. Step 6: Final answer
    x = 101.35

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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.