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Finding the Fourth Proportional to 139,793,305.52, 209,720,227.04 and 53,531,715.34

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Solution

The fourth proportional to 139,793,305.52, 209,720,227.04 and 53,531,715.34 is: 80,309,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,793,305.52 : 209,720,227.04 = 53,531,715.34 : x
  2. Step 2: Convert to fraction form
    139,793,305.52/209,720,227.04 = 53,531,715.34/x
  3. Step 3: Cross multiply
    139,793,305.52x = 209,720,227.04 × 53,531,715.34
  4. Step 4: Simplify right side
    139,793,305.52x = 11,226,683,494,945,452
  5. Step 5: Solve for x
    x = 11,226,683,494,945,452/139,793,305.52
  6. Step 6: Final answer
    x = 80,309,163.97

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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.