Home / 123,147.18-170,083.26-82,790.87

Finding the Fourth Proportional to 123,147.18, 170,083.26 and 82,790.87

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Solution

The fourth proportional to 123,147.18, 170,083.26 and 82,790.87 is: 114,345.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,147.18 : 170,083.26 = 82,790.87 : x
  2. Step 2: Convert to fraction form
    123,147.18/170,083.26 = 82,790.87/x
  3. Step 3: Cross multiply
    123,147.18x = 170,083.26 × 82,790.87
  4. Step 4: Simplify right side
    123,147.18x = 14,081,340,217.42
  5. Step 5: Solve for x
    x = 14,081,340,217.42/123,147.18
  6. Step 6: Final answer
    x = 114,345.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.