Home / 139,149.11-208,732.35-39,316.97

Finding the Fourth Proportional to 139,149.11, 208,732.35 and 39,316.97

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Solution

The fourth proportional to 139,149.11, 208,732.35 and 39,316.97 is: 58,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,149.11 : 208,732.35 = 39,316.97 : x
  2. Step 2: Convert to fraction form
    139,149.11/208,732.35 = 39,316.97/x
  3. Step 3: Cross multiply
    139,149.11x = 208,732.35 × 39,316.97
  4. Step 4: Simplify right side
    139,149.11x = 8,206,723,542.98
  5. Step 5: Solve for x
    x = 8,206,723,542.98/139,149.11
  6. Step 6: Final answer
    x = 58,977.91

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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.