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Finding the Fourth Proportional to 168,013.60, 252,135.60 and 74,586.40

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Solution

The fourth proportional to 168,013.60, 252,135.60 and 74,586.40 is: 111,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,013.60 : 252,135.60 = 74,586.40 : x
  2. Step 2: Convert to fraction form
    168,013.60/252,135.60 = 74,586.40/x
  3. Step 3: Cross multiply
    168,013.60x = 252,135.60 × 74,586.40
  4. Step 4: Simplify right side
    168,013.60x = 18,805,886,715.84
  5. Step 5: Solve for x
    x = 18,805,886,715.84/168,013.60
  6. Step 6: Final answer
    x = 111,930.74

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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.