Home / 138,789.06-191,528.91-75,127.38

Finding the Fourth Proportional to 138,789.06, 191,528.91 and 75,127.38

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Solution

The fourth proportional to 138,789.06, 191,528.91 and 75,127.38 is: 103,675.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,789.06 : 191,528.91 = 75,127.38 : x
  2. Step 2: Convert to fraction form
    138,789.06/191,528.91 = 75,127.38/x
  3. Step 3: Cross multiply
    138,789.06x = 191,528.91 × 75,127.38
  4. Step 4: Simplify right side
    138,789.06x = 14,389,065,202.56
  5. Step 5: Solve for x
    x = 14,389,065,202.56/138,789.06
  6. Step 6: Final answer
    x = 103,675.79

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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.