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Finding the Fourth Proportional to 79,168.22, 118,741.29 and 20,000.22

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Solution

The fourth proportional to 79,168.22, 118,741.29 and 20,000.22 is: 29,997.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,168.22 : 118,741.29 = 20,000.22 : x
  2. Step 2: Convert to fraction form
    79,168.22/118,741.29 = 20,000.22/x
  3. Step 3: Cross multiply
    79,168.22x = 118,741.29 × 20,000.22
  4. Step 4: Simplify right side
    79,168.22x = 2,374,851,923.08
  5. Step 5: Solve for x
    x = 2,374,851,923.08/79,168.22
  6. Step 6: Final answer
    x = 29,997.54

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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.