Home / 209,208,012.80-313,812,019.20-118,508,748.80

Finding the Fourth Proportional to 209,208,012.80, 313,812,019.20 and 118,508,748.80

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Solution

The fourth proportional to 209,208,012.80, 313,812,019.20 and 118,508,748.80 is: 177,763,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,208,012.80 : 313,812,019.20 = 118,508,748.80 : x
  2. Step 2: Convert to fraction form
    209,208,012.80/313,812,019.20 = 118,508,748.80/x
  3. Step 3: Cross multiply
    209,208,012.80x = 313,812,019.20 × 118,508,748.80
  4. Step 4: Simplify right side
    209,208,012.80x = 37,189,469,753,793,576
  5. Step 5: Solve for x
    x = 37,189,469,753,793,576/209,208,012.80
  6. Step 6: Final answer
    x = 177,763,123.20

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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.