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Finding the Fourth Proportional to 125.58, 188.19 and 64.69

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Solution

The fourth proportional to 125.58, 188.19 and 64.69 is: 96.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.58 : 188.19 = 64.69 : x
  2. Step 2: Convert to fraction form
    125.58/188.19 = 64.69/x
  3. Step 3: Cross multiply
    125.58x = 188.19 × 64.69
  4. Step 4: Simplify right side
    125.58x = 12,174.01
  5. Step 5: Solve for x
    x = 12,174.01/125.58
  6. Step 6: Final answer
    x = 96.94

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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.