Home / 138,789.39-191,529.59-75,127.44

Finding the Fourth Proportional to 138,789.39, 191,529.59 and 75,127.44

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Solution

The fourth proportional to 138,789.39, 191,529.59 and 75,127.44 is: 103,675.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,789.39 : 191,529.59 = 75,127.44 : x
  2. Step 2: Convert to fraction form
    138,789.39/191,529.59 = 75,127.44/x
  3. Step 3: Cross multiply
    138,789.39x = 191,529.59 × 75,127.44
  4. Step 4: Simplify right side
    138,789.39x = 14,389,127,405.31
  5. Step 5: Solve for x
    x = 14,389,127,405.31/138,789.39
  6. Step 6: Final answer
    x = 103,675.99

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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.