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Finding the Fourth Proportional to 139,333.35, 208,934.19 and 53,984.19

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Solution

The fourth proportional to 139,333.35, 208,934.19 and 53,984.19 is: 80,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,333.35 : 208,934.19 = 53,984.19 : x
  2. Step 2: Convert to fraction form
    139,333.35/208,934.19 = 53,984.19/x
  3. Step 3: Cross multiply
    139,333.35x = 208,934.19 × 53,984.19
  4. Step 4: Simplify right side
    139,333.35x = 11,279,143,010.46
  5. Step 5: Solve for x
    x = 11,279,143,010.46/139,333.35
  6. Step 6: Final answer
    x = 80,950.78

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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.