Home / 161,763.91-223,231.14-90,142.36

Finding the Fourth Proportional to 161,763.91, 223,231.14 and 90,142.36

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Solution

The fourth proportional to 161,763.91, 223,231.14 and 90,142.36 is: 124,394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,763.91 : 223,231.14 = 90,142.36 : x
  2. Step 2: Convert to fraction form
    161,763.91/223,231.14 = 90,142.36/x
  3. Step 3: Cross multiply
    161,763.91x = 223,231.14 × 90,142.36
  4. Step 4: Simplify right side
    161,763.91x = 20,122,581,785.09
  5. Step 5: Solve for x
    x = 20,122,581,785.09/161,763.91
  6. Step 6: Final answer
    x = 124,394.75

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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.