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Finding the Fourth Proportional to 117,204.57, 161,742.35 and 63,489.42

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Solution

The fourth proportional to 117,204.57, 161,742.35 and 63,489.42 is: 87,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,204.57 : 161,742.35 = 63,489.42 : x
  2. Step 2: Convert to fraction form
    117,204.57/161,742.35 = 63,489.42/x
  3. Step 3: Cross multiply
    117,204.57x = 161,742.35 × 63,489.42
  4. Step 4: Simplify right side
    117,204.57x = 10,268,928,149.66
  5. Step 5: Solve for x
    x = 10,268,928,149.66/117,204.57
  6. Step 6: Final answer
    x = 87,615.42

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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.