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Finding the Fourth Proportional to 79,161.60, 118,742.40 and 19,997.44

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Solution

The fourth proportional to 79,161.60, 118,742.40 and 19,997.44 is: 29,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161.60 : 118,742.40 = 19,997.44 : x
  2. Step 2: Convert to fraction form
    79,161.60/118,742.40 = 19,997.44/x
  3. Step 3: Cross multiply
    79,161.60x = 118,742.40 × 19,997.44
  4. Step 4: Simplify right side
    79,161.60x = 2,374,544,019.46
  5. Step 5: Solve for x
    x = 2,374,544,019.46/79,161.60
  6. Step 6: Final answer
    x = 29,996.16

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Similar ratio
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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.