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Finding the Fourth Proportional to 139,630, 209,441.88 and 34,449.88

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Solution

The fourth proportional to 139,630, 209,441.88 and 34,449.88 is: 51,674.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,630 : 209,441.88 = 34,449.88 : x
  2. Step 2: Convert to fraction form
    139,630/209,441.88 = 34,449.88/x
  3. Step 3: Cross multiply
    139,630x = 209,441.88 × 34,449.88
  4. Step 4: Simplify right side
    139,630x = 7,215,247,632.97
  5. Step 5: Solve for x
    x = 7,215,247,632.97/139,630
  6. Step 6: Final answer
    x = 51,674.05

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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.