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Finding the Fourth Proportional to 125.65, 189.14 and 106.52

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Solution

The fourth proportional to 125.65, 189.14 and 106.52 is: 160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.65 : 189.14 = 106.52 : x
  2. Step 2: Convert to fraction form
    125.65/189.14 = 106.52/x
  3. Step 3: Cross multiply
    125.65x = 189.14 × 106.52
  4. Step 4: Simplify right side
    125.65x = 20,145.71
  5. Step 5: Solve for x
    x = 20,145.71/125.65
  6. Step 6: Final answer
    x = 160.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.