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Finding the Fourth Proportional to 139,115.43, 208,689.70 and 44,312.32

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Solution

The fourth proportional to 139,115.43, 208,689.70 and 44,312.32 is: 66,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,115.43 : 208,689.70 = 44,312.32 : x
  2. Step 2: Convert to fraction form
    139,115.43/208,689.70 = 44,312.32/x
  3. Step 3: Cross multiply
    139,115.43x = 208,689.70 × 44,312.32
  4. Step 4: Simplify right side
    139,115.43x = 9,247,524,134.60
  5. Step 5: Solve for x
    x = 9,247,524,134.60/139,115.43
  6. Step 6: Final answer
    x = 66,473.75

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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.