Home / 138,767.23-191,498.77-75,105.03

Finding the Fourth Proportional to 138,767.23, 191,498.77 and 75,105.03

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Solution

The fourth proportional to 138,767.23, 191,498.77 and 75,105.03 is: 103,644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,767.23 : 191,498.77 = 75,105.03 : x
  2. Step 2: Convert to fraction form
    138,767.23/191,498.77 = 75,105.03/x
  3. Step 3: Cross multiply
    138,767.23x = 191,498.77 × 75,105.03
  4. Step 4: Simplify right side
    138,767.23x = 14,382,520,865.81
  5. Step 5: Solve for x
    x = 14,382,520,865.81/138,767.23
  6. Step 6: Final answer
    x = 103,644.94

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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.