Home / 138,745.13-191,469.66-75,084.29

Finding the Fourth Proportional to 138,745.13, 191,469.66 and 75,084.29

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Solution

The fourth proportional to 138,745.13, 191,469.66 and 75,084.29 is: 103,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,745.13 : 191,469.66 = 75,084.29 : x
  2. Step 2: Convert to fraction form
    138,745.13/191,469.66 = 75,084.29/x
  3. Step 3: Cross multiply
    138,745.13x = 191,469.66 × 75,084.29
  4. Step 4: Simplify right side
    138,745.13x = 14,376,362,956.74
  5. Step 5: Solve for x
    x = 14,376,362,956.74/138,745.13
  6. Step 6: Final answer
    x = 103,617.07

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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.