Home / 131,185.10-196,712.95-55,269.78

Finding the Fourth Proportional to 131,185.10, 196,712.95 and 55,269.78

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Solution

The fourth proportional to 131,185.10, 196,712.95 and 55,269.78 is: 82,877.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,185.10 : 196,712.95 = 55,269.78 : x
  2. Step 2: Convert to fraction form
    131,185.10/196,712.95 = 55,269.78/x
  3. Step 3: Cross multiply
    131,185.10x = 196,712.95 × 55,269.78
  4. Step 4: Simplify right side
    131,185.10x = 10,872,281,469.65
  5. Step 5: Solve for x
    x = 10,872,281,469.65/131,185.10
  6. Step 6: Final answer
    x = 82,877.41

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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.