Home / 198,480,850.20-297,809,748.90-90,720,005.40

Finding the Fourth Proportional to 198,480,850.20, 297,809,748.90 and 90,720,005.40

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Solution

The fourth proportional to 198,480,850.20, 297,809,748.90 and 90,720,005.40 is: 136,120,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,480,850.20 : 297,809,748.90 = 90,720,005.40 : x
  2. Step 2: Convert to fraction form
    198,480,850.20/297,809,748.90 = 90,720,005.40/x
  3. Step 3: Cross multiply
    198,480,850.20x = 297,809,748.90 × 90,720,005.40
  4. Step 4: Simplify right side
    198,480,850.20x = 27,017,302,028,380,644
  5. Step 5: Solve for x
    x = 27,017,302,028,380,644/198,480,850.20
  6. Step 6: Final answer
    x = 136,120,446.89

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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.