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Finding the Fourth Proportional to 202,111.80, 303,167.70 and 68,972.10

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Solution

The fourth proportional to 202,111.80, 303,167.70 and 68,972.10 is: 103,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,111.80 : 303,167.70 = 68,972.10 : x
  2. Step 2: Convert to fraction form
    202,111.80/303,167.70 = 68,972.10/x
  3. Step 3: Cross multiply
    202,111.80x = 303,167.70 × 68,972.10
  4. Step 4: Simplify right side
    202,111.80x = 20,910,112,921.17
  5. Step 5: Solve for x
    x = 20,910,112,921.17/202,111.80
  6. Step 6: Final answer
    x = 103,458.15

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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.