Home / 131,037.20-196,555.80-120,899.60

Finding the Fourth Proportional to 131,037.20, 196,555.80 and 120,899.60

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Solution

The fourth proportional to 131,037.20, 196,555.80 and 120,899.60 is: 181,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,037.20 : 196,555.80 = 120,899.60 : x
  2. Step 2: Convert to fraction form
    131,037.20/196,555.80 = 120,899.60/x
  3. Step 3: Cross multiply
    131,037.20x = 196,555.80 × 120,899.60
  4. Step 4: Simplify right side
    131,037.20x = 23,763,517,597.68
  5. Step 5: Solve for x
    x = 23,763,517,597.68/131,037.20
  6. Step 6: Final answer
    x = 181,349.40

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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.