Home / 261,858,278.70-392,773,179.87-80,105,456.70

Finding the Fourth Proportional to 261,858,278.70, 392,773,179.87 and 80,105,456.70

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Solution

The fourth proportional to 261,858,278.70, 392,773,179.87 and 80,105,456.70 is: 120,153,829.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,858,278.70 : 392,773,179.87 = 80,105,456.70 : x
  2. Step 2: Convert to fraction form
    261,858,278.70/392,773,179.87 = 80,105,456.70/x
  3. Step 3: Cross multiply
    261,858,278.70x = 392,773,179.87 × 80,105,456.70
  4. Step 4: Simplify right side
    261,858,278.70x = 31,463,274,952,997,600
  5. Step 5: Solve for x
    x = 31,463,274,952,997,600/261,858,278.70
  6. Step 6: Final answer
    x = 120,153,829.43

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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.