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Finding the Fourth Proportional to 126,550.67, 189,638.62 and 55,407.56

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Solution

The fourth proportional to 126,550.67, 189,638.62 and 55,407.56 is: 83,029.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,550.67 : 189,638.62 = 55,407.56 : x
  2. Step 2: Convert to fraction form
    126,550.67/189,638.62 = 55,407.56/x
  3. Step 3: Cross multiply
    126,550.67x = 189,638.62 × 55,407.56
  4. Step 4: Simplify right side
    126,550.67x = 10,507,412,129.26
  5. Step 5: Solve for x
    x = 10,507,412,129.26/126,550.67
  6. Step 6: Final answer
    x = 83,029.29

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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.