Home / 126,067.70-189,101.55-90,638.30

Finding the Fourth Proportional to 126,067.70, 189,101.55 and 90,638.30

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Solution

The fourth proportional to 126,067.70, 189,101.55 and 90,638.30 is: 135,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,067.70 : 189,101.55 = 90,638.30 : x
  2. Step 2: Convert to fraction form
    126,067.70/189,101.55 = 90,638.30/x
  3. Step 3: Cross multiply
    126,067.70x = 189,101.55 × 90,638.30
  4. Step 4: Simplify right side
    126,067.70x = 17,139,843,019.37
  5. Step 5: Solve for x
    x = 17,139,843,019.37/126,067.70
  6. Step 6: Final answer
    x = 135,957.45

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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.