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Finding the Fourth Proportional to 146,639.31, 202,361.54 and 79,571.31

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Solution

The fourth proportional to 146,639.31, 202,361.54 and 79,571.31 is: 109,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,639.31 : 202,361.54 = 79,571.31 : x
  2. Step 2: Convert to fraction form
    146,639.31/202,361.54 = 79,571.31/x
  3. Step 3: Cross multiply
    146,639.31x = 202,361.54 × 79,571.31
  4. Step 4: Simplify right side
    146,639.31x = 16,102,172,433.56
  5. Step 5: Solve for x
    x = 16,102,172,433.56/146,639.31
  6. Step 6: Final answer
    x = 109,808.02

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Why These Related Problems?

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