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Finding the Fourth Proportional to 117,272.66, 161,836.55 and 63,557.66

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Solution

The fourth proportional to 117,272.66, 161,836.55 and 63,557.66 is: 87,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,272.66 : 161,836.55 = 63,557.66 : x
  2. Step 2: Convert to fraction form
    117,272.66/161,836.55 = 63,557.66/x
  3. Step 3: Cross multiply
    117,272.66x = 161,836.55 × 63,557.66
  4. Step 4: Simplify right side
    117,272.66x = 10,285,952,261.58
  5. Step 5: Solve for x
    x = 10,285,952,261.58/117,272.66
  6. Step 6: Final answer
    x = 87,709.72

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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.