Home / 143,003.44-197,357.00-78,485.14

Finding the Fourth Proportional to 143,003.44, 197,357.00 and 78,485.14

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Solution

The fourth proportional to 143,003.44, 197,357.00 and 78,485.14 is: 108,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.44 : 197,357.00 = 78,485.14 : x
  2. Step 2: Convert to fraction form
    143,003.44/197,357.00 = 78,485.14/x
  3. Step 3: Cross multiply
    143,003.44x = 197,357.00 × 78,485.14
  4. Step 4: Simplify right side
    143,003.44x = 15,489,591,382.55
  5. Step 5: Solve for x
    x = 15,489,591,382.55/143,003.44
  6. Step 6: Final answer
    x = 108,316.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.