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Finding the Fourth Proportional to 112.59, 154.98 and 101.52

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Solution

The fourth proportional to 112.59, 154.98 and 101.52 is: 139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.59 : 154.98 = 101.52 : x
  2. Step 2: Convert to fraction form
    112.59/154.98 = 101.52/x
  3. Step 3: Cross multiply
    112.59x = 154.98 × 101.52
  4. Step 4: Simplify right side
    112.59x = 15,733.57
  5. Step 5: Solve for x
    x = 15,733.57/112.59
  6. Step 6: Final answer
    x = 139.74

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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.