Home / 209,163,355.52-313,783,339.90-86,274,635.54

Finding the Fourth Proportional to 209,163,355.52, 313,783,339.90 and 86,274,635.54

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Solution

The fourth proportional to 209,163,355.52, 313,783,339.90 and 86,274,635.54 is: 129,427,753.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,163,355.52 : 313,783,339.90 = 86,274,635.54 : x
  2. Step 2: Convert to fraction form
    209,163,355.52/313,783,339.90 = 86,274,635.54/x
  3. Step 3: Cross multiply
    209,163,355.52x = 313,783,339.90 × 86,274,635.54
  4. Step 4: Simplify right side
    209,163,355.52x = 27,071,543,288,396,440
  5. Step 5: Solve for x
    x = 27,071,543,288,396,440/209,163,355.52
  6. Step 6: Final answer
    x = 129,427,753.83

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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.