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Finding the Fourth Proportional to 136.02, 187.95 and 125.70

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Solution

The fourth proportional to 136.02, 187.95 and 125.70 is: 173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.02 : 187.95 = 125.70 : x
  2. Step 2: Convert to fraction form
    136.02/187.95 = 125.70/x
  3. Step 3: Cross multiply
    136.02x = 187.95 × 125.70
  4. Step 4: Simplify right side
    136.02x = 23,625.32
  5. Step 5: Solve for x
    x = 23,625.32/136.02
  6. Step 6: Final answer
    x = 173.69

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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.