Home / 138,759.19-191,489.10-75,098.35

Finding the Fourth Proportional to 138,759.19, 191,489.10 and 75,098.35

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Solution

The fourth proportional to 138,759.19, 191,489.10 and 75,098.35 is: 103,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,759.19 : 191,489.10 = 75,098.35 : x
  2. Step 2: Convert to fraction form
    138,759.19/191,489.10 = 75,098.35/x
  3. Step 3: Cross multiply
    138,759.19x = 191,489.10 × 75,098.35
  4. Step 4: Simplify right side
    138,759.19x = 14,380,515,410.73
  5. Step 5: Solve for x
    x = 14,380,515,410.73/138,759.19
  6. Step 6: Final answer
    x = 103,636.49

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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.