Home / 171,990.14-258,084.84-72,141.44

Finding the Fourth Proportional to 171,990.14, 258,084.84 and 72,141.44

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Solution

The fourth proportional to 171,990.14, 258,084.84 and 72,141.44 is: 108,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,990.14 : 258,084.84 = 72,141.44 : x
  2. Step 2: Convert to fraction form
    171,990.14/258,084.84 = 72,141.44/x
  3. Step 3: Cross multiply
    171,990.14x = 258,084.84 × 72,141.44
  4. Step 4: Simplify right side
    171,990.14x = 18,618,611,999.77
  5. Step 5: Solve for x
    x = 18,618,611,999.77/171,990.14
  6. Step 6: Final answer
    x = 108,253.95

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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.