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Finding the Fourth Proportional to 216,894.80, 325,355.97 and 67,122.51

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Solution

The fourth proportional to 216,894.80, 325,355.97 and 67,122.51 is: 100,688.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,894.80 : 325,355.97 = 67,122.51 : x
  2. Step 2: Convert to fraction form
    216,894.80/325,355.97 = 67,122.51/x
  3. Step 3: Cross multiply
    216,894.80x = 325,355.97 × 67,122.51
  4. Step 4: Simplify right side
    216,894.80x = 21,838,709,601.59
  5. Step 5: Solve for x
    x = 21,838,709,601.59/216,894.80
  6. Step 6: Final answer
    x = 100,688.03

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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.