Home / 99,218,221.80-148,667,900.40-73,390,189.20

Finding the Fourth Proportional to 99,218,221.80, 148,667,900.40 and 73,390,189.20

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Solution

The fourth proportional to 99,218,221.80, 148,667,900.40 and 73,390,189.20 is: 109,967,354.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,218,221.80 : 148,667,900.40 = 73,390,189.20 : x
  2. Step 2: Convert to fraction form
    99,218,221.80/148,667,900.40 = 73,390,189.20/x
  3. Step 3: Cross multiply
    99,218,221.80x = 148,667,900.40 × 73,390,189.20
  4. Step 4: Simplify right side
    99,218,221.80x = 10,910,765,338,322,756
  5. Step 5: Solve for x
    x = 10,910,765,338,322,756/99,218,221.80
  6. Step 6: Final answer
    x = 109,967,354.19

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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.