Home / 138,948.29-191,752.20-85,262.97

Finding the Fourth Proportional to 138,948.29, 191,752.20 and 85,262.97

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Solution

The fourth proportional to 138,948.29, 191,752.20 and 85,262.97 is: 117,665.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.29 : 191,752.20 = 85,262.97 : x
  2. Step 2: Convert to fraction form
    138,948.29/191,752.20 = 85,262.97/x
  3. Step 3: Cross multiply
    138,948.29x = 191,752.20 × 85,262.97
  4. Step 4: Simplify right side
    138,948.29x = 16,349,362,076.03
  5. Step 5: Solve for x
    x = 16,349,362,076.03/138,948.29
  6. Step 6: Final answer
    x = 117,665.09

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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.