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Finding the Fourth Proportional to 125.99, 188.98 and 98.95

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Solution

The fourth proportional to 125.99, 188.98 and 98.95 is: 148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.99 : 188.98 = 98.95 : x
  2. Step 2: Convert to fraction form
    125.99/188.98 = 98.95/x
  3. Step 3: Cross multiply
    125.99x = 188.98 × 98.95
  4. Step 4: Simplify right side
    125.99x = 18,699.57
  5. Step 5: Solve for x
    x = 18,699.57/125.99
  6. Step 6: Final answer
    x = 148.42

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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.