Home / 253,667.05-380,388.91-76,132.53

Finding the Fourth Proportional to 253,667.05, 380,388.91 and 76,132.53

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Solution

The fourth proportional to 253,667.05, 380,388.91 and 76,132.53 is: 114,165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,667.05 : 380,388.91 = 76,132.53 : x
  2. Step 2: Convert to fraction form
    253,667.05/380,388.91 = 76,132.53/x
  3. Step 3: Cross multiply
    253,667.05x = 380,388.91 × 76,132.53
  4. Step 4: Simplify right side
    253,667.05x = 28,959,970,102.24
  5. Step 5: Solve for x
    x = 28,959,970,102.24/253,667.05
  6. Step 6: Final answer
    x = 114,165.28

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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.