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Finding the Fourth Proportional to 202,769.31, 279,728.64 and 131,172.42

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Solution

The fourth proportional to 202,769.31, 279,728.64 and 131,172.42 is: 180,957.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,769.31 : 279,728.64 = 131,172.42 : x
  2. Step 2: Convert to fraction form
    202,769.31/279,728.64 = 131,172.42/x
  3. Step 3: Cross multiply
    202,769.31x = 279,728.64 × 131,172.42
  4. Step 4: Simplify right side
    202,769.31x = 36,692,682,652.11
  5. Step 5: Solve for x
    x = 36,692,682,652.11/202,769.31
  6. Step 6: Final answer
    x = 180,957.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.