Home / 131,425.10-196,684.05-78,872.30

Finding the Fourth Proportional to 131,425.10, 196,684.05 and 78,872.30

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Solution

The fourth proportional to 131,425.10, 196,684.05 and 78,872.30 is: 118,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,425.10 : 196,684.05 = 78,872.30 : x
  2. Step 2: Convert to fraction form
    131,425.10/196,684.05 = 78,872.30/x
  3. Step 3: Cross multiply
    131,425.10x = 196,684.05 × 78,872.30
  4. Step 4: Simplify right side
    131,425.10x = 15,512,923,396.82
  5. Step 5: Solve for x
    x = 15,512,923,396.82/131,425.10
  6. Step 6: Final answer
    x = 118,036.23

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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.