Home / 105,679.90-158,540.56-39,120.58

Finding the Fourth Proportional to 105,679.90, 158,540.56 and 39,120.58

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Solution

The fourth proportional to 105,679.90, 158,540.56 and 39,120.58 is: 58,688.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,679.90 : 158,540.56 = 39,120.58 : x
  2. Step 2: Convert to fraction form
    105,679.90/158,540.56 = 39,120.58/x
  3. Step 3: Cross multiply
    105,679.90x = 158,540.56 × 39,120.58
  4. Step 4: Simplify right side
    105,679.90x = 6,202,198,660.72
  5. Step 5: Solve for x
    x = 6,202,198,660.72/105,679.90
  6. Step 6: Final answer
    x = 58,688.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.