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Finding the Fourth Proportional to 117,196.77, 161,731.47 and 63,481.65

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Solution

The fourth proportional to 117,196.77, 161,731.47 and 63,481.65 is: 87,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,196.77 : 161,731.47 = 63,481.65 : x
  2. Step 2: Convert to fraction form
    117,196.77/161,731.47 = 63,481.65/x
  3. Step 3: Cross multiply
    117,196.77x = 161,731.47 × 63,481.65
  4. Step 4: Simplify right side
    117,196.77x = 10,266,980,572.53
  5. Step 5: Solve for x
    x = 10,266,980,572.53/117,196.77
  6. Step 6: Final answer
    x = 87,604.64

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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.