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Finding the Fourth Proportional to 125.98, 188.72 and 95.58

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Solution

The fourth proportional to 125.98, 188.72 and 95.58 is: 143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.98 : 188.72 = 95.58 : x
  2. Step 2: Convert to fraction form
    125.98/188.72 = 95.58/x
  3. Step 3: Cross multiply
    125.98x = 188.72 × 95.58
  4. Step 4: Simplify right side
    125.98x = 18,037.86
  5. Step 5: Solve for x
    x = 18,037.86/125.98
  6. Step 6: Final answer
    x = 143.18

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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.