Home / 253,666.05-380,387.42-76,131.53

Finding the Fourth Proportional to 253,666.05, 380,387.42 and 76,131.53

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Solution

The fourth proportional to 253,666.05, 380,387.42 and 76,131.53 is: 114,163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,666.05 : 380,387.42 = 76,131.53 : x
  2. Step 2: Convert to fraction form
    253,666.05/380,387.42 = 76,131.53/x
  3. Step 3: Cross multiply
    253,666.05x = 380,387.42 × 76,131.53
  4. Step 4: Simplify right side
    253,666.05x = 28,959,475,896.69
  5. Step 5: Solve for x
    x = 28,959,475,896.69/253,666.05
  6. Step 6: Final answer
    x = 114,163.78

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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.