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Finding the Fourth Proportional to 117,742.29, 162,479.42 and 66,758.45

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Solution

The fourth proportional to 117,742.29, 162,479.42 and 66,758.45 is: 92,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,742.29 : 162,479.42 = 66,758.45 : x
  2. Step 2: Convert to fraction form
    117,742.29/162,479.42 = 66,758.45/x
  3. Step 3: Cross multiply
    117,742.29x = 162,479.42 × 66,758.45
  4. Step 4: Simplify right side
    117,742.29x = 10,846,873,089.91
  5. Step 5: Solve for x
    x = 10,846,873,089.91/117,742.29
  6. Step 6: Final answer
    x = 92,123.85

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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.