Home / 99,291,921.70-148,937,882.55-68,680,920.10

Finding the Fourth Proportional to 99,291,921.70, 148,937,882.55 and 68,680,920.10

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Solution

The fourth proportional to 99,291,921.70, 148,937,882.55 and 68,680,920.10 is: 103,021,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,291,921.70 : 148,937,882.55 = 68,680,920.10 : x
  2. Step 2: Convert to fraction form
    99,291,921.70/148,937,882.55 = 68,680,920.10/x
  3. Step 3: Cross multiply
    99,291,921.70x = 148,937,882.55 × 68,680,920.10
  4. Step 4: Simplify right side
    99,291,921.70x = 10,229,190,811,279,734
  5. Step 5: Solve for x
    x = 10,229,190,811,279,734/99,291,921.70
  6. Step 6: Final answer
    x = 103,021,380.15

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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.