Home / 131,805.80-197,439.90-81,732.20

Finding the Fourth Proportional to 131,805.80, 197,439.90 and 81,732.20

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Solution

The fourth proportional to 131,805.80, 197,439.90 and 81,732.20 is: 122,431.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,805.80 : 197,439.90 = 81,732.20 : x
  2. Step 2: Convert to fraction form
    131,805.80/197,439.90 = 81,732.20/x
  3. Step 3: Cross multiply
    131,805.80x = 197,439.90 × 81,732.20
  4. Step 4: Simplify right side
    131,805.80x = 16,137,197,394.78
  5. Step 5: Solve for x
    x = 16,137,197,394.78/131,805.80
  6. Step 6: Final answer
    x = 122,431.62

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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.