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Finding the Fourth Proportional to 131,761.80, 197,661.87 and 42,993.45

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Solution

The fourth proportional to 131,761.80, 197,661.87 and 42,993.45 is: 64,496.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,761.80 : 197,661.87 = 42,993.45 : x
  2. Step 2: Convert to fraction form
    131,761.80/197,661.87 = 42,993.45/x
  3. Step 3: Cross multiply
    131,761.80x = 197,661.87 × 42,993.45
  4. Step 4: Simplify right side
    131,761.80x = 8,498,165,724.75
  5. Step 5: Solve for x
    x = 8,498,165,724.75/131,761.80
  6. Step 6: Final answer
    x = 64,496.43

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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.