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Finding the Fourth Proportional to 120,187.56, 165,815.19 and 92,601.30

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Solution

The fourth proportional to 120,187.56, 165,815.19 and 92,601.30 is: 127,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,187.56 : 165,815.19 = 92,601.30 : x
  2. Step 2: Convert to fraction form
    120,187.56/165,815.19 = 92,601.30/x
  3. Step 3: Cross multiply
    120,187.56x = 165,815.19 × 92,601.30
  4. Step 4: Simplify right side
    120,187.56x = 15,354,702,153.75
  5. Step 5: Solve for x
    x = 15,354,702,153.75/120,187.56
  6. Step 6: Final answer
    x = 127,756.17

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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.