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Finding the Fourth Proportional to 216,871.68, 325,081.99 and 83,843.31

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Solution

The fourth proportional to 216,871.68, 325,081.99 and 83,843.31 is: 125,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,871.68 : 325,081.99 = 83,843.31 : x
  2. Step 2: Convert to fraction form
    216,871.68/325,081.99 = 83,843.31/x
  3. Step 3: Cross multiply
    216,871.68x = 325,081.99 × 83,843.31
  4. Step 4: Simplify right side
    216,871.68x = 27,255,949,558.26
  5. Step 5: Solve for x
    x = 27,255,949,558.26/216,871.68
  6. Step 6: Final answer
    x = 125,677.77

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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.