Home / 138,717.66-191,429.01-75,054.06

Finding the Fourth Proportional to 138,717.66, 191,429.01 and 75,054.06

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Solution

The fourth proportional to 138,717.66, 191,429.01 and 75,054.06 is: 103,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,717.66 : 191,429.01 = 75,054.06 : x
  2. Step 2: Convert to fraction form
    138,717.66/191,429.01 = 75,054.06/x
  3. Step 3: Cross multiply
    138,717.66x = 191,429.01 × 75,054.06
  4. Step 4: Simplify right side
    138,717.66x = 14,367,524,402.28
  5. Step 5: Solve for x
    x = 14,367,524,402.28/138,717.66
  6. Step 6: Final answer
    x = 103,573.87

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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.