Home / 118,015.85-162,922.19-79,976.43

Finding the Fourth Proportional to 118,015.85, 162,922.19 and 79,976.43

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Solution

The fourth proportional to 118,015.85, 162,922.19 and 79,976.43 is: 110,408.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,015.85 : 162,922.19 = 79,976.43 : x
  2. Step 2: Convert to fraction form
    118,015.85/162,922.19 = 79,976.43/x
  3. Step 3: Cross multiply
    118,015.85x = 162,922.19 × 79,976.43
  4. Step 4: Simplify right side
    118,015.85x = 13,029,934,724.10
  5. Step 5: Solve for x
    x = 13,029,934,724.10/118,015.85
  6. Step 6: Final answer
    x = 110,408.34

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1.5x scale

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.