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Finding the Fourth Proportional to 117,069, 161,555.61 and 63,354

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Solution

The fourth proportional to 117,069, 161,555.61 and 63,354 is: 87,428.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,069 : 161,555.61 = 63,354 : x
  2. Step 2: Convert to fraction form
    117,069/161,555.61 = 63,354/x
  3. Step 3: Cross multiply
    117,069x = 161,555.61 × 63,354
  4. Step 4: Simplify right side
    117,069x = 10,235,194,115.94
  5. Step 5: Solve for x
    x = 10,235,194,115.94/117,069
  6. Step 6: Final answer
    x = 87,428.73

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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.