Home / 138,513.42-207,790.11-43,711.38

Finding the Fourth Proportional to 138,513.42, 207,790.11 and 43,711.38

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Solution

The fourth proportional to 138,513.42, 207,790.11 and 43,711.38 is: 65,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,513.42 : 207,790.11 = 43,711.38 : x
  2. Step 2: Convert to fraction form
    138,513.42/207,790.11 = 43,711.38/x
  3. Step 3: Cross multiply
    138,513.42x = 207,790.11 × 43,711.38
  4. Step 4: Simplify right side
    138,513.42x = 9,082,792,458.45
  5. Step 5: Solve for x
    x = 9,082,792,458.45/138,513.42
  6. Step 6: Final answer
    x = 65,573.38

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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.