Home / 126,290.48-189,335.10-72,921.94

Finding the Fourth Proportional to 126,290.48, 189,335.10 and 72,921.94

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Solution

The fourth proportional to 126,290.48, 189,335.10 and 72,921.94 is: 109,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,290.48 : 189,335.10 = 72,921.94 : x
  2. Step 2: Convert to fraction form
    126,290.48/189,335.10 = 72,921.94/x
  3. Step 3: Cross multiply
    126,290.48x = 189,335.10 × 72,921.94
  4. Step 4: Simplify right side
    126,290.48x = 13,806,682,802.09
  5. Step 5: Solve for x
    x = 13,806,682,802.09/126,290.48
  6. Step 6: Final answer
    x = 109,324.81

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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.