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Finding the Fourth Proportional to 216,930.60, 325,343.43 and 83,725.92

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Solution

The fourth proportional to 216,930.60, 325,343.43 and 83,725.92 is: 125,568.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,930.60 : 325,343.43 = 83,725.92 : x
  2. Step 2: Convert to fraction form
    216,930.60/325,343.43 = 83,725.92/x
  3. Step 3: Cross multiply
    216,930.60x = 325,343.43 × 83,725.92
  4. Step 4: Simplify right side
    216,930.60x = 27,239,677,992.71
  5. Step 5: Solve for x
    x = 27,239,677,992.71/216,930.60
  6. Step 6: Final answer
    x = 125,568.63

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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.