Home / 109,633.80-164,456.10-57,145.80

Finding the Fourth Proportional to 109,633.80, 164,456.10 and 57,145.80

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Solution

The fourth proportional to 109,633.80, 164,456.10 and 57,145.80 is: 85,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,633.80 : 164,456.10 = 57,145.80 : x
  2. Step 2: Convert to fraction form
    109,633.80/164,456.10 = 57,145.80/x
  3. Step 3: Cross multiply
    109,633.80x = 164,456.10 × 57,145.80
  4. Step 4: Simplify right side
    109,633.80x = 9,397,975,399.38
  5. Step 5: Solve for x
    x = 9,397,975,399.38/109,633.80
  6. Step 6: Final answer
    x = 85,721.51

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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.