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Finding the Fourth Proportional to 125,487.67, 188,231.50 and 31,993.42

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Solution

The fourth proportional to 125,487.67, 188,231.50 and 31,993.42 is: 47,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,487.67 : 188,231.50 = 31,993.42 : x
  2. Step 2: Convert to fraction form
    125,487.67/188,231.50 = 31,993.42/x
  3. Step 3: Cross multiply
    125,487.67x = 188,231.50 × 31,993.42
  4. Step 4: Simplify right side
    125,487.67x = 6,022,169,116.87
  5. Step 5: Solve for x
    x = 6,022,169,116.87/125,487.67
  6. Step 6: Final answer
    x = 47,990.13

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1.5x scale

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.