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Finding the Fourth Proportional to 113,383.70, 170,269.95 and 74,114.90

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Solution

The fourth proportional to 113,383.70, 170,269.95 and 74,114.90 is: 111,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,383.70 : 170,269.95 = 74,114.90 : x
  2. Step 2: Convert to fraction form
    113,383.70/170,269.95 = 74,114.90/x
  3. Step 3: Cross multiply
    113,383.70x = 170,269.95 × 74,114.90
  4. Step 4: Simplify right side
    113,383.70x = 12,619,540,317.26
  5. Step 5: Solve for x
    x = 12,619,540,317.26/113,383.70
  6. Step 6: Final answer
    x = 111,299.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.