Home / 128,058.36-191,932.01-90,629.37

Finding the Fourth Proportional to 128,058.36, 191,932.01 and 90,629.37

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Solution

The fourth proportional to 128,058.36, 191,932.01 and 90,629.37 is: 135,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,058.36 : 191,932.01 = 90,629.37 : x
  2. Step 2: Convert to fraction form
    128,058.36/191,932.01 = 90,629.37/x
  3. Step 3: Cross multiply
    128,058.36x = 191,932.01 × 90,629.37
  4. Step 4: Simplify right side
    128,058.36x = 17,394,677,149.13
  5. Step 5: Solve for x
    x = 17,394,677,149.13/128,058.36
  6. Step 6: Final answer
    x = 135,833.98

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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.