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Finding the Fourth Proportional to 131,645.96, 197,472.70 and 51,680.60

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Solution

The fourth proportional to 131,645.96, 197,472.70 and 51,680.60 is: 77,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,645.96 : 197,472.70 = 51,680.60 : x
  2. Step 2: Convert to fraction form
    131,645.96/197,472.70 = 51,680.60/x
  3. Step 3: Cross multiply
    131,645.96x = 197,472.70 × 51,680.60
  4. Step 4: Simplify right side
    131,645.96x = 10,205,507,619.62
  5. Step 5: Solve for x
    x = 10,205,507,619.62/131,645.96
  6. Step 6: Final answer
    x = 77,522.38

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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.