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Finding the Fourth Proportional to 117,679.57, 162,380.90 and 69,252.71

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Solution

The fourth proportional to 117,679.57, 162,380.90 and 69,252.71 is: 95,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,679.57 : 162,380.90 = 69,252.71 : x
  2. Step 2: Convert to fraction form
    117,679.57/162,380.90 = 69,252.71/x
  3. Step 3: Cross multiply
    117,679.57x = 162,380.90 × 69,252.71
  4. Step 4: Simplify right side
    117,679.57x = 11,245,316,738.47
  5. Step 5: Solve for x
    x = 11,245,316,738.47/117,679.57
  6. Step 6: Final answer
    x = 95,558.79

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1.5x scale

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.