Home / 208,529,954.70-312,906,906.45-87,373,653.90

Finding the Fourth Proportional to 208,529,954.70, 312,906,906.45 and 87,373,653.90

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Solution

The fourth proportional to 208,529,954.70, 312,906,906.45 and 87,373,653.90 is: 131,107,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,529,954.70 : 312,906,906.45 = 87,373,653.90 : x
  2. Step 2: Convert to fraction form
    208,529,954.70/312,906,906.45 = 87,373,653.90/x
  3. Step 3: Cross multiply
    208,529,954.70x = 312,906,906.45 × 87,373,653.90
  4. Step 4: Simplify right side
    208,529,954.70x = 27,339,819,747,081,980
  5. Step 5: Solve for x
    x = 27,339,819,747,081,980/208,529,954.70
  6. Step 6: Final answer
    x = 131,107,397.91

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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.