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Finding the Fourth Proportional to 204,113, 306,308.80 and 70,991.92

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Solution

The fourth proportional to 204,113, 306,308.80 and 70,991.92 is: 106,536.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,113 : 306,308.80 = 70,991.92 : x
  2. Step 2: Convert to fraction form
    204,113/306,308.80 = 70,991.92/x
  3. Step 3: Cross multiply
    204,113x = 306,308.80 × 70,991.92
  4. Step 4: Simplify right side
    204,113x = 21,745,449,824.90
  5. Step 5: Solve for x
    x = 21,745,449,824.90/204,113
  6. Step 6: Final answer
    x = 106,536.33

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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.