Home / 131,466.20-197,199.30-78,848.60

Finding the Fourth Proportional to 131,466.20, 197,199.30 and 78,848.60

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Solution

The fourth proportional to 131,466.20, 197,199.30 and 78,848.60 is: 118,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,466.20 : 197,199.30 = 78,848.60 : x
  2. Step 2: Convert to fraction form
    131,466.20/197,199.30 = 78,848.60/x
  3. Step 3: Cross multiply
    131,466.20x = 197,199.30 × 78,848.60
  4. Step 4: Simplify right side
    131,466.20x = 15,548,888,725.98
  5. Step 5: Solve for x
    x = 15,548,888,725.98/131,466.20
  6. Step 6: Final answer
    x = 118,272.90

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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.