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Finding the Fourth Proportional to 131,431.80, 197,244.90 and 52,602.60

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Solution

The fourth proportional to 131,431.80, 197,244.90 and 52,602.60 is: 78,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,431.80 : 197,244.90 = 52,602.60 : x
  2. Step 2: Convert to fraction form
    131,431.80/197,244.90 = 52,602.60/x
  3. Step 3: Cross multiply
    131,431.80x = 197,244.90 × 52,602.60
  4. Step 4: Simplify right side
    131,431.80x = 10,375,594,576.74
  5. Step 5: Solve for x
    x = 10,375,594,576.74/131,431.80
  6. Step 6: Final answer
    x = 78,942.80

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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.