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Finding the Fourth Proportional to 139,563.96, 209,330.52 and 38,369.92

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Solution

The fourth proportional to 139,563.96, 209,330.52 and 38,369.92 is: 57,550.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,563.96 : 209,330.52 = 38,369.92 : x
  2. Step 2: Convert to fraction form
    139,563.96/209,330.52 = 38,369.92/x
  3. Step 3: Cross multiply
    139,563.96x = 209,330.52 × 38,369.92
  4. Step 4: Simplify right side
    139,563.96x = 8,031,995,305.96
  5. Step 5: Solve for x
    x = 8,031,995,305.96/139,563.96
  6. Step 6: Final answer
    x = 57,550.64

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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.