Home / 143,198.28-197,450.58-91,445.66

Finding the Fourth Proportional to 143,198.28, 197,450.58 and 91,445.66

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Solution

The fourth proportional to 143,198.28, 197,450.58 and 91,445.66 is: 126,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,198.28 : 197,450.58 = 91,445.66 : x
  2. Step 2: Convert to fraction form
    143,198.28/197,450.58 = 91,445.66/x
  3. Step 3: Cross multiply
    143,198.28x = 197,450.58 × 91,445.66
  4. Step 4: Simplify right side
    143,198.28x = 18,055,998,187.21
  5. Step 5: Solve for x
    x = 18,055,998,187.21/143,198.28
  6. Step 6: Final answer
    x = 126,090.89

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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.