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Finding the Fourth Proportional to 117,880.89, 162,679.30 and 64,169.49

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Solution

The fourth proportional to 117,880.89, 162,679.30 and 64,169.49 is: 88,555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,880.89 : 162,679.30 = 64,169.49 : x
  2. Step 2: Convert to fraction form
    117,880.89/162,679.30 = 64,169.49/x
  3. Step 3: Cross multiply
    117,880.89x = 162,679.30 × 64,169.49
  4. Step 4: Simplify right side
    117,880.89x = 10,439,046,944.09
  5. Step 5: Solve for x
    x = 10,439,046,944.09/117,880.89
  6. Step 6: Final answer
    x = 88,555.89

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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.