Home / 131,450.20-197,175.30-78,832.60

Finding the Fourth Proportional to 131,450.20, 197,175.30 and 78,832.60

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Solution

The fourth proportional to 131,450.20, 197,175.30 and 78,832.60 is: 118,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,450.20 : 197,175.30 = 78,832.60 : x
  2. Step 2: Convert to fraction form
    131,450.20/197,175.30 = 78,832.60/x
  3. Step 3: Cross multiply
    131,450.20x = 197,175.30 × 78,832.60
  4. Step 4: Simplify right side
    131,450.20x = 15,543,841,554.78
  5. Step 5: Solve for x
    x = 15,543,841,554.78/131,450.20
  6. Step 6: Final answer
    x = 118,248.90

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1.5x scale

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.