Home / 213,268.12-320,099-108,160.90

Finding the Fourth Proportional to 213,268.12, 320,099 and 108,160.90

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Solution

The fourth proportional to 213,268.12, 320,099 and 108,160.90 is: 162,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,268.12 : 320,099 = 108,160.90 : x
  2. Step 2: Convert to fraction form
    213,268.12/320,099 = 108,160.90/x
  3. Step 3: Cross multiply
    213,268.12x = 320,099 × 108,160.90
  4. Step 4: Simplify right side
    213,268.12x = 34,622,195,929.10
  5. Step 5: Solve for x
    x = 34,622,195,929.10/213,268.12
  6. Step 6: Final answer
    x = 162,341.17

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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.