Home / 140,149.20-193,404.36-76,486.44

Finding the Fourth Proportional to 140,149.20, 193,404.36 and 76,486.44

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Solution

The fourth proportional to 140,149.20, 193,404.36 and 76,486.44 is: 105,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,149.20 : 193,404.36 = 76,486.44 : x
  2. Step 2: Convert to fraction form
    140,149.20/193,404.36 = 76,486.44/x
  3. Step 3: Cross multiply
    140,149.20x = 193,404.36 × 76,486.44
  4. Step 4: Simplify right side
    140,149.20x = 14,792,810,976.88
  5. Step 5: Solve for x
    x = 14,792,810,976.88/140,149.20
  6. Step 6: Final answer
    x = 105,550.45

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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.