Home / 126,218.42-189,338.05-90,844.38

Finding the Fourth Proportional to 126,218.42, 189,338.05 and 90,844.38

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Solution

The fourth proportional to 126,218.42, 189,338.05 and 90,844.38 is: 136,274.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,218.42 : 189,338.05 = 90,844.38 : x
  2. Step 2: Convert to fraction form
    126,218.42/189,338.05 = 90,844.38/x
  3. Step 3: Cross multiply
    126,218.42x = 189,338.05 × 90,844.38
  4. Step 4: Simplify right side
    126,218.42x = 17,200,297,762.66
  5. Step 5: Solve for x
    x = 17,200,297,762.66/126,218.42
  6. Step 6: Final answer
    x = 136,274.07

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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.