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Finding the Fourth Proportional to 168,530,947.20, 252,803,419.20 and 53,512,243.20

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Solution

The fourth proportional to 168,530,947.20, 252,803,419.20 and 53,512,243.20 is: 80,270,586.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,530,947.20 : 252,803,419.20 = 53,512,243.20 : x
  2. Step 2: Convert to fraction form
    168,530,947.20/252,803,419.20 = 53,512,243.20/x
  3. Step 3: Cross multiply
    168,530,947.20x = 252,803,419.20 × 53,512,243.20
  4. Step 4: Simplify right side
    168,530,947.20x = 13,528,078,050,021,950
  5. Step 5: Solve for x
    x = 13,528,078,050,021,950/168,530,947.20
  6. Step 6: Final answer
    x = 80,270,586.94

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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.