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Finding the Fourth Proportional to 139,914,217.80, 209,898,226.80 and 53,645,896.80

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Solution

The fourth proportional to 139,914,217.80, 209,898,226.80 and 53,645,896.80 is: 80,479,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,914,217.80 : 209,898,226.80 = 53,645,896.80 : x
  2. Step 2: Convert to fraction form
    139,914,217.80/209,898,226.80 = 53,645,896.80/x
  3. Step 3: Cross multiply
    139,914,217.80x = 209,898,226.80 × 53,645,896.80
  4. Step 4: Simplify right side
    139,914,217.80x = 11,260,178,613,415,794
  5. Step 5: Solve for x
    x = 11,260,178,613,415,794/139,914,217.80
  6. Step 6: Final answer
    x = 80,479,159.23

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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.