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Finding the Fourth Proportional to 117,204.80, 161,743.02 and 63,489.65

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Solution

The fourth proportional to 117,204.80, 161,743.02 and 63,489.65 is: 87,615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,204.80 : 161,743.02 = 63,489.65 : x
  2. Step 2: Convert to fraction form
    117,204.80/161,743.02 = 63,489.65/x
  3. Step 3: Cross multiply
    117,204.80x = 161,743.02 × 63,489.65
  4. Step 4: Simplify right side
    117,204.80x = 10,269,007,729.74
  5. Step 5: Solve for x
    x = 10,269,007,729.74/117,204.80
  6. Step 6: Final answer
    x = 87,615.93

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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.