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Finding the Fourth Proportional to 117,732.46, 162,431.04 and 66,739.72

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Solution

The fourth proportional to 117,732.46, 162,431.04 and 66,739.72 is: 92,078.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,732.46 : 162,431.04 = 66,739.72 : x
  2. Step 2: Convert to fraction form
    117,732.46/162,431.04 = 66,739.72/x
  3. Step 3: Cross multiply
    117,732.46x = 162,431.04 × 66,739.72
  4. Step 4: Simplify right side
    117,732.46x = 10,840,602,128.91
  5. Step 5: Solve for x
    x = 10,840,602,128.91/117,732.46
  6. Step 6: Final answer
    x = 92,078.28

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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.