Home / 99,665,653.85-149,498,480.78-72,791,797.85

Finding the Fourth Proportional to 99,665,653.85, 149,498,480.78 and 72,791,797.85

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Solution

The fourth proportional to 99,665,653.85, 149,498,480.78 and 72,791,797.85 is: 109,187,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665,653.85 : 149,498,480.78 = 72,791,797.85 : x
  2. Step 2: Convert to fraction form
    99,665,653.85/149,498,480.78 = 72,791,797.85/x
  3. Step 3: Cross multiply
    99,665,653.85x = 149,498,480.78 × 72,791,797.85
  4. Step 4: Simplify right side
    99,665,653.85x = 10,882,263,191,455,910
  5. Step 5: Solve for x
    x = 10,882,263,191,455,910/99,665,653.85
  6. Step 6: Final answer
    x = 109,187,696.78

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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.