Home / 216,971.18-325,508.72-90,541.09

Finding the Fourth Proportional to 216,971.18, 325,508.72 and 90,541.09

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Solution

The fourth proportional to 216,971.18, 325,508.72 and 90,541.09 is: 135,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,971.18 : 325,508.72 = 90,541.09 : x
  2. Step 2: Convert to fraction form
    216,971.18/325,508.72 = 90,541.09/x
  3. Step 3: Cross multiply
    216,971.18x = 325,508.72 × 90,541.09
  4. Step 4: Simplify right side
    216,971.18x = 29,471,913,046.83
  5. Step 5: Solve for x
    x = 29,471,913,046.83/216,971.18
  6. Step 6: Final answer
    x = 135,833.31

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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.