Home / 138,806.07-191,552.99-75,143.87

Finding the Fourth Proportional to 138,806.07, 191,552.99 and 75,143.87

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Solution

The fourth proportional to 138,806.07, 191,552.99 and 75,143.87 is: 103,698.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,806.07 : 191,552.99 = 75,143.87 : x
  2. Step 2: Convert to fraction form
    138,806.07/191,552.99 = 75,143.87/x
  3. Step 3: Cross multiply
    138,806.07x = 191,552.99 × 75,143.87
  4. Step 4: Simplify right side
    138,806.07x = 14,394,031,645.19
  5. Step 5: Solve for x
    x = 14,394,031,645.19/138,806.07
  6. Step 6: Final answer
    x = 103,698.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.