Home / 212,580,071.40-318,870,107.10-161,183,821.80

Finding the Fourth Proportional to 212,580,071.40, 318,870,107.10 and 161,183,821.80

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Solution

The fourth proportional to 212,580,071.40, 318,870,107.10 and 161,183,821.80 is: 241,775,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,580,071.40 : 318,870,107.10 = 161,183,821.80 : x
  2. Step 2: Convert to fraction form
    212,580,071.40/318,870,107.10 = 161,183,821.80/x
  3. Step 3: Cross multiply
    212,580,071.40x = 318,870,107.10 × 161,183,821.80
  4. Step 4: Simplify right side
    212,580,071.40x = 51,396,702,520,153,320
  5. Step 5: Solve for x
    x = 51,396,702,520,153,320/212,580,071.40
  6. Step 6: Final answer
    x = 241,775,732.70

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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.