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Finding the Fourth Proportional to 125,378.40, 188,073.84 and 41,131.08

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Solution

The fourth proportional to 125,378.40, 188,073.84 and 41,131.08 is: 61,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,378.40 : 188,073.84 = 41,131.08 : x
  2. Step 2: Convert to fraction form
    125,378.40/188,073.84 = 41,131.08/x
  3. Step 3: Cross multiply
    125,378.40x = 188,073.84 × 41,131.08
  4. Step 4: Simplify right side
    125,378.40x = 7,735,680,158.95
  5. Step 5: Solve for x
    x = 7,735,680,158.95/125,378.40
  6. Step 6: Final answer
    x = 61,698.67

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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.