Home / 105,909.89-158,787.90-49,721.09

Finding the Fourth Proportional to 105,909.89, 158,787.90 and 49,721.09

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Solution

The fourth proportional to 105,909.89, 158,787.90 and 49,721.09 is: 74,545.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,909.89 : 158,787.90 = 49,721.09 : x
  2. Step 2: Convert to fraction form
    105,909.89/158,787.90 = 49,721.09/x
  3. Step 3: Cross multiply
    105,909.89x = 158,787.90 × 49,721.09
  4. Step 4: Simplify right side
    105,909.89x = 7,895,106,672.87
  5. Step 5: Solve for x
    x = 7,895,106,672.87/105,909.89
  6. Step 6: Final answer
    x = 74,545.51

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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.