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Finding the Fourth Proportional to 100,451.94, 138,613.56 and 60,164.64

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Solution

The fourth proportional to 100,451.94, 138,613.56 and 60,164.64 is: 83,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,451.94 : 138,613.56 = 60,164.64 : x
  2. Step 2: Convert to fraction form
    100,451.94/138,613.56 = 60,164.64/x
  3. Step 3: Cross multiply
    100,451.94x = 138,613.56 × 60,164.64
  4. Step 4: Simplify right side
    100,451.94x = 8,339,634,936.52
  5. Step 5: Solve for x
    x = 8,339,634,936.52/100,451.94
  6. Step 6: Final answer
    x = 83,021.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.