Home / 135,622.15-187,160.29-78,273.41

Finding the Fourth Proportional to 135,622.15, 187,160.29 and 78,273.41

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Solution

The fourth proportional to 135,622.15, 187,160.29 and 78,273.41 is: 108,018.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,622.15 : 187,160.29 = 78,273.41 : x
  2. Step 2: Convert to fraction form
    135,622.15/187,160.29 = 78,273.41/x
  3. Step 3: Cross multiply
    135,622.15x = 187,160.29 × 78,273.41
  4. Step 4: Simplify right side
    135,622.15x = 14,649,672,983.40
  5. Step 5: Solve for x
    x = 14,649,672,983.40/135,622.15
  6. Step 6: Final answer
    x = 108,018.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.