Home / 156,266,131.82-215,651,221.53-85,704,551.42

Finding the Fourth Proportional to 156,266,131.82, 215,651,221.53 and 85,704,551.42

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Solution

The fourth proportional to 156,266,131.82, 215,651,221.53 and 85,704,551.42 is: 118,274,452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,266,131.82 : 215,651,221.53 = 85,704,551.42 : x
  2. Step 2: Convert to fraction form
    156,266,131.82/215,651,221.53 = 85,704,551.42/x
  3. Step 3: Cross multiply
    156,266,131.82x = 215,651,221.53 × 85,704,551.42
  4. Step 4: Simplify right side
    156,266,131.82x = 18,482,291,204,942,824
  5. Step 5: Solve for x
    x = 18,482,291,204,942,824/156,266,131.82
  6. Step 6: Final answer
    x = 118,274,452.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.