Home / 138,474.66-191,108.52-81,904.26

Finding the Fourth Proportional to 138,474.66, 191,108.52 and 81,904.26

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Solution

The fourth proportional to 138,474.66, 191,108.52 and 81,904.26 is: 113,035.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,474.66 : 191,108.52 = 81,904.26 : x
  2. Step 2: Convert to fraction form
    138,474.66/191,108.52 = 81,904.26/x
  3. Step 3: Cross multiply
    138,474.66x = 191,108.52 × 81,904.26
  4. Step 4: Simplify right side
    138,474.66x = 15,652,601,910.30
  5. Step 5: Solve for x
    x = 15,652,601,910.30/138,474.66
  6. Step 6: Final answer
    x = 113,035.86

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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.