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Finding the Fourth Proportional to 125.71, 187.63 and 116.89

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Solution

The fourth proportional to 125.71, 187.63 and 116.89 is: 174.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.71 : 187.63 = 116.89 : x
  2. Step 2: Convert to fraction form
    125.71/187.63 = 116.89/x
  3. Step 3: Cross multiply
    125.71x = 187.63 × 116.89
  4. Step 4: Simplify right side
    125.71x = 21,932.94
  5. Step 5: Solve for x
    x = 21,932.94/125.71
  6. Step 6: Final answer
    x = 174.48

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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.