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Finding the Fourth Proportional to 125.99, 188.87 and 64.25

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Solution

The fourth proportional to 125.99, 188.87 and 64.25 is: 96.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.99 : 188.87 = 64.25 : x
  2. Step 2: Convert to fraction form
    125.99/188.87 = 64.25/x
  3. Step 3: Cross multiply
    125.99x = 188.87 × 64.25
  4. Step 4: Simplify right side
    125.99x = 12,135.53
  5. Step 5: Solve for x
    x = 12,135.53/125.99
  6. Step 6: Final answer
    x = 96.32

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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.