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Finding the Fourth Proportional to 139,108.46, 208,683.48 and 50,382.68

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Solution

The fourth proportional to 139,108.46, 208,683.48 and 50,382.68 is: 75,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,108.46 : 208,683.48 = 50,382.68 : x
  2. Step 2: Convert to fraction form
    139,108.46/208,683.48 = 50,382.68/x
  3. Step 3: Cross multiply
    139,108.46x = 208,683.48 × 50,382.68
  4. Step 4: Simplify right side
    139,108.46x = 10,514,032,994.13
  5. Step 5: Solve for x
    x = 10,514,032,994.13/139,108.46
  6. Step 6: Final answer
    x = 75,581.55

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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.