Home / 209,193,947.31-313,693,955.09-78,000,997.39

Finding the Fourth Proportional to 209,193,947.31, 313,693,955.09 and 78,000,997.39

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Solution

The fourth proportional to 209,193,947.31, 313,693,955.09 and 78,000,997.39 is: 116,965,340.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,193,947.31 : 313,693,955.09 = 78,000,997.39 : x
  2. Step 2: Convert to fraction form
    209,193,947.31/313,693,955.09 = 78,000,997.39/x
  3. Step 3: Cross multiply
    209,193,947.31x = 313,693,955.09 × 78,000,997.39
  4. Step 4: Simplify right side
    209,193,947.31x = 24,468,441,371,158,220
  5. Step 5: Solve for x
    x = 24,468,441,371,158,220/209,193,947.31
  6. Step 6: Final answer
    x = 116,965,340.94

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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.