Home / 138,789.33-191,528.46-75,127.11

Finding the Fourth Proportional to 138,789.33, 191,528.46 and 75,127.11

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Solution

The fourth proportional to 138,789.33, 191,528.46 and 75,127.11 is: 103,674.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,789.33 : 191,528.46 = 75,127.11 : x
  2. Step 2: Convert to fraction form
    138,789.33/191,528.46 = 75,127.11/x
  3. Step 3: Cross multiply
    138,789.33x = 191,528.46 × 75,127.11
  4. Step 4: Simplify right side
    138,789.33x = 14,388,979,682.55
  5. Step 5: Solve for x
    x = 14,388,979,682.55/138,789.33
  6. Step 6: Final answer
    x = 103,674.97

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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.