Home / 138,789.26-191,529.60-75,127.58

Finding the Fourth Proportional to 138,789.26, 191,529.60 and 75,127.58

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Solution

The fourth proportional to 138,789.26, 191,529.60 and 75,127.58 is: 103,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,789.26 : 191,529.60 = 75,127.58 : x
  2. Step 2: Convert to fraction form
    138,789.26/191,529.60 = 75,127.58/x
  3. Step 3: Cross multiply
    138,789.26x = 191,529.60 × 75,127.58
  4. Step 4: Simplify right side
    138,789.26x = 14,389,155,346.37
  5. Step 5: Solve for x
    x = 14,389,155,346.37/138,789.26
  6. Step 6: Final answer
    x = 103,676.29

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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.