Home / 131,114.70-196,672.05-78,497.10

Finding the Fourth Proportional to 131,114.70, 196,672.05 and 78,497.10

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Solution

The fourth proportional to 131,114.70, 196,672.05 and 78,497.10 is: 117,745.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,114.70 : 196,672.05 = 78,497.10 : x
  2. Step 2: Convert to fraction form
    131,114.70/196,672.05 = 78,497.10/x
  3. Step 3: Cross multiply
    131,114.70x = 196,672.05 × 78,497.10
  4. Step 4: Simplify right side
    131,114.70x = 15,438,185,576.06
  5. Step 5: Solve for x
    x = 15,438,185,576.06/131,114.70
  6. Step 6: Final answer
    x = 117,745.65

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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.