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Finding the Fourth Proportional to 131,640.40, 197,460.60 and 52,766.80

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Solution

The fourth proportional to 131,640.40, 197,460.60 and 52,766.80 is: 79,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,640.40 : 197,460.60 = 52,766.80 : x
  2. Step 2: Convert to fraction form
    131,640.40/197,460.60 = 52,766.80/x
  3. Step 3: Cross multiply
    131,640.40x = 197,460.60 × 52,766.80
  4. Step 4: Simplify right side
    131,640.40x = 10,419,363,988.08
  5. Step 5: Solve for x
    x = 10,419,363,988.08/131,640.40
  6. Step 6: Final answer
    x = 79,150.20

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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.