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Finding the Fourth Proportional to 139,490.80, 209,034.26 and 96,169.27

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Solution

The fourth proportional to 139,490.80, 209,034.26 and 96,169.27 is: 144,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,490.80 : 209,034.26 = 96,169.27 : x
  2. Step 2: Convert to fraction form
    139,490.80/209,034.26 = 96,169.27/x
  3. Step 3: Cross multiply
    139,490.80x = 209,034.26 × 96,169.27
  4. Step 4: Simplify right side
    139,490.80x = 20,102,672,189.19
  5. Step 5: Solve for x
    x = 20,102,672,189.19/139,490.80
  6. Step 6: Final answer
    x = 144,114.68

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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.