Home / 138,746.05-191,469.49-75,083.78

Finding the Fourth Proportional to 138,746.05, 191,469.49 and 75,083.78

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Solution

The fourth proportional to 138,746.05, 191,469.49 and 75,083.78 is: 103,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,746.05 : 191,469.49 = 75,083.78 : x
  2. Step 2: Convert to fraction form
    138,746.05/191,469.49 = 75,083.78/x
  3. Step 3: Cross multiply
    138,746.05x = 191,469.49 × 75,083.78
  4. Step 4: Simplify right side
    138,746.05x = 14,376,253,354.84
  5. Step 5: Solve for x
    x = 14,376,253,354.84/138,746.05
  6. Step 6: Final answer
    x = 103,615.59

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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.