Home / 138,764.09-191,494.43-75,101.88

Finding the Fourth Proportional to 138,764.09, 191,494.43 and 75,101.88

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Solution

The fourth proportional to 138,764.09, 191,494.43 and 75,101.88 is: 103,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,764.09 : 191,494.43 = 75,101.88 : x
  2. Step 2: Convert to fraction form
    138,764.09/191,494.43 = 75,101.88/x
  3. Step 3: Cross multiply
    138,764.09x = 191,494.43 × 75,101.88
  4. Step 4: Simplify right side
    138,764.09x = 14,381,591,890.28
  5. Step 5: Solve for x
    x = 14,381,591,890.28/138,764.09
  6. Step 6: Final answer
    x = 103,640.59

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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.