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Finding the Fourth Proportional to 117,558, 162,279.68 and 79,369.25

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Solution

The fourth proportional to 117,558, 162,279.68 and 79,369.25 is: 109,563.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,558 : 162,279.68 = 79,369.25 : x
  2. Step 2: Convert to fraction form
    117,558/162,279.68 = 79,369.25/x
  3. Step 3: Cross multiply
    117,558x = 162,279.68 × 79,369.25
  4. Step 4: Simplify right side
    117,558x = 12,880,016,491.84
  5. Step 5: Solve for x
    x = 12,880,016,491.84/117,558
  6. Step 6: Final answer
    x = 109,563.08

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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.