Home / 104,721.78-156,989.70-38,149.50

Finding the Fourth Proportional to 104,721.78, 156,989.70 and 38,149.50

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Solution

The fourth proportional to 104,721.78, 156,989.70 and 38,149.50 is: 57,190.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,721.78 : 156,989.70 = 38,149.50 : x
  2. Step 2: Convert to fraction form
    104,721.78/156,989.70 = 38,149.50/x
  3. Step 3: Cross multiply
    104,721.78x = 156,989.70 × 38,149.50
  4. Step 4: Simplify right side
    104,721.78x = 5,989,078,560.15
  5. Step 5: Solve for x
    x = 5,989,078,560.15/104,721.78
  6. Step 6: Final answer
    x = 57,190.38

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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.