Home / 140,019,491.20-209,693,313.60-68,131,926.40

Finding the Fourth Proportional to 140,019,491.20, 209,693,313.60 and 68,131,926.40

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Solution

The fourth proportional to 140,019,491.20, 209,693,313.60 and 68,131,926.40 is: 102,034,433.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019,491.20 : 209,693,313.60 = 68,131,926.40 : x
  2. Step 2: Convert to fraction form
    140,019,491.20/209,693,313.60 = 68,131,926.40/x
  3. Step 3: Cross multiply
    140,019,491.20x = 209,693,313.60 × 68,131,926.40
  4. Step 4: Simplify right side
    140,019,491.20x = 14,286,809,408,767,320
  5. Step 5: Solve for x
    x = 14,286,809,408,767,320/140,019,491.20
  6. Step 6: Final answer
    x = 102,034,433.11

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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.