Home / 99,739,212.60-149,720,793.30-77,120,383.80

Finding the Fourth Proportional to 99,739,212.60, 149,720,793.30 and 77,120,383.80

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Solution

The fourth proportional to 99,739,212.60, 149,720,793.30 and 77,120,383.80 is: 115,767,156.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,739,212.60 : 149,720,793.30 = 77,120,383.80 : x
  2. Step 2: Convert to fraction form
    99,739,212.60/149,720,793.30 = 77,120,383.80/x
  3. Step 3: Cross multiply
    99,739,212.60x = 149,720,793.30 × 77,120,383.80
  4. Step 4: Simplify right side
    99,739,212.60x = 11,546,525,042,136,470
  5. Step 5: Solve for x
    x = 11,546,525,042,136,470/99,739,212.60
  6. Step 6: Final answer
    x = 115,767,156.58

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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.