Home / 99,022,297.20-148,391,728.20-72,910,829.40

Finding the Fourth Proportional to 99,022,297.20, 148,391,728.20 and 72,910,829.40

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Solution

The fourth proportional to 99,022,297.20, 148,391,728.20 and 72,910,829.40 is: 109,261,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,022,297.20 : 148,391,728.20 = 72,910,829.40 : x
  2. Step 2: Convert to fraction form
    99,022,297.20/148,391,728.20 = 72,910,829.40/x
  3. Step 3: Cross multiply
    99,022,297.20x = 148,391,728.20 × 72,910,829.40
  4. Step 4: Simplify right side
    99,022,297.20x = 10,819,363,979,161,370
  5. Step 5: Solve for x
    x = 10,819,363,979,161,370/99,022,297.20
  6. Step 6: Final answer
    x = 109,261,896.41

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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.