Home / 131,466.20-197,199.30-81,699.80

Finding the Fourth Proportional to 131,466.20, 197,199.30 and 81,699.80

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Solution

The fourth proportional to 131,466.20, 197,199.30 and 81,699.80 is: 122,549.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,466.20 : 197,199.30 = 81,699.80 : x
  2. Step 2: Convert to fraction form
    131,466.20/197,199.30 = 81,699.80/x
  3. Step 3: Cross multiply
    131,466.20x = 197,199.30 × 81,699.80
  4. Step 4: Simplify right side
    131,466.20x = 16,111,143,370.14
  5. Step 5: Solve for x
    x = 16,111,143,370.14/131,466.20
  6. Step 6: Final answer
    x = 122,549.70

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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.