Home / 138,252.33-190,786.05-77,822.82

Finding the Fourth Proportional to 138,252.33, 190,786.05 and 77,822.82

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Solution

The fourth proportional to 138,252.33, 190,786.05 and 77,822.82 is: 107,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,252.33 : 190,786.05 = 77,822.82 : x
  2. Step 2: Convert to fraction form
    138,252.33/190,786.05 = 77,822.82/x
  3. Step 3: Cross multiply
    138,252.33x = 190,786.05 × 77,822.82
  4. Step 4: Simplify right side
    138,252.33x = 14,847,508,427.66
  5. Step 5: Solve for x
    x = 14,847,508,427.66/138,252.33
  6. Step 6: Final answer
    x = 107,394.27

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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.