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Finding the Fourth Proportional to 139,554.66, 209,387.88 and 50,814.30

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Solution

The fourth proportional to 139,554.66, 209,387.88 and 50,814.30 is: 76,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,554.66 : 209,387.88 = 50,814.30 : x
  2. Step 2: Convert to fraction form
    139,554.66/209,387.88 = 50,814.30/x
  3. Step 3: Cross multiply
    139,554.66x = 209,387.88 × 50,814.30
  4. Step 4: Simplify right side
    139,554.66x = 10,639,898,550.68
  5. Step 5: Solve for x
    x = 10,639,898,550.68/139,554.66
  6. Step 6: Final answer
    x = 76,241.80

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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.