Home / 138,902.11-191,684.28-75,240.07

Finding the Fourth Proportional to 138,902.11, 191,684.28 and 75,240.07

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Solution

The fourth proportional to 138,902.11, 191,684.28 and 75,240.07 is: 103,830.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,902.11 : 191,684.28 = 75,240.07 : x
  2. Step 2: Convert to fraction form
    138,902.11/191,684.28 = 75,240.07/x
  3. Step 3: Cross multiply
    138,902.11x = 191,684.28 × 75,240.07
  4. Step 4: Simplify right side
    138,902.11x = 14,422,338,645.10
  5. Step 5: Solve for x
    x = 14,422,338,645.10/138,902.11
  6. Step 6: Final answer
    x = 103,830.95

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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.