Home / 199,143.96-298,705-80,783.52

Finding the Fourth Proportional to 199,143.96, 298,705 and 80,783.52

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Solution

The fourth proportional to 199,143.96, 298,705 and 80,783.52 is: 121,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,143.96 : 298,705 = 80,783.52 : x
  2. Step 2: Convert to fraction form
    199,143.96/298,705 = 80,783.52/x
  3. Step 3: Cross multiply
    199,143.96x = 298,705 × 80,783.52
  4. Step 4: Simplify right side
    199,143.96x = 24,130,441,341.60
  5. Step 5: Solve for x
    x = 24,130,441,341.60/199,143.96
  6. Step 6: Final answer
    x = 121,170.84

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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.