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Finding the Fourth Proportional to 139,558, 210,267.67 and 126,246.48

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Solution

The fourth proportional to 139,558, 210,267.67 and 126,246.48 is: 190,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,558 : 210,267.67 = 126,246.48 : x
  2. Step 2: Convert to fraction form
    139,558/210,267.67 = 126,246.48/x
  3. Step 3: Cross multiply
    139,558x = 210,267.67 × 126,246.48
  4. Step 4: Simplify right side
    139,558x = 26,545,553,195.30
  5. Step 5: Solve for x
    x = 26,545,553,195.30/139,558
  6. Step 6: Final answer
    x = 190,211.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.