Home / 209,990,761.60-315,001,277.68-80,598,371.92

Finding the Fourth Proportional to 209,990,761.60, 315,001,277.68 and 80,598,371.92

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Solution

The fourth proportional to 209,990,761.60, 315,001,277.68 and 80,598,371.92 is: 120,903,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,990,761.60 : 315,001,277.68 = 80,598,371.92 : x
  2. Step 2: Convert to fraction form
    209,990,761.60/315,001,277.68 = 80,598,371.92/x
  3. Step 3: Cross multiply
    209,990,761.60x = 315,001,277.68 × 80,598,371.92
  4. Step 4: Simplify right side
    209,990,761.60x = 25,388,590,133,727,836
  5. Step 5: Solve for x
    x = 25,388,590,133,727,836/209,990,761.60
  6. Step 6: Final answer
    x = 120,903,367.08

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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.