Home / 131,425.20-197,137.80-61,311.60

Finding the Fourth Proportional to 131,425.20, 197,137.80 and 61,311.60

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Solution

The fourth proportional to 131,425.20, 197,137.80 and 61,311.60 is: 91,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,425.20 : 197,137.80 = 61,311.60 : x
  2. Step 2: Convert to fraction form
    131,425.20/197,137.80 = 61,311.60/x
  3. Step 3: Cross multiply
    131,425.20x = 197,137.80 × 61,311.60
  4. Step 4: Simplify right side
    131,425.20x = 12,086,833,938.48
  5. Step 5: Solve for x
    x = 12,086,833,938.48/131,425.20
  6. Step 6: Final answer
    x = 91,967.40

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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.