Home / 156,404,734.85-215,848,623.22-86,790,115.71

Finding the Fourth Proportional to 156,404,734.85, 215,848,623.22 and 86,790,115.71

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Solution

The fourth proportional to 156,404,734.85, 215,848,623.22 and 86,790,115.71 is: 119,775,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,404,734.85 : 215,848,623.22 = 86,790,115.71 : x
  2. Step 2: Convert to fraction form
    156,404,734.85/215,848,623.22 = 86,790,115.71/x
  3. Step 3: Cross multiply
    156,404,734.85x = 215,848,623.22 × 86,790,115.71
  4. Step 4: Simplify right side
    156,404,734.85x = 18,733,526,984,891,016
  5. Step 5: Solve for x
    x = 18,733,526,984,891,016/156,404,734.85
  6. Step 6: Final answer
    x = 119,775,958.21

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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.