Home / 100,874.29-139,076.40-82,657.27

Finding the Fourth Proportional to 100,874.29, 139,076.40 and 82,657.27

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Solution

The fourth proportional to 100,874.29, 139,076.40 and 82,657.27 is: 113,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,874.29 : 139,076.40 = 82,657.27 : x
  2. Step 2: Convert to fraction form
    100,874.29/139,076.40 = 82,657.27/x
  3. Step 3: Cross multiply
    100,874.29x = 139,076.40 × 82,657.27
  4. Step 4: Simplify right side
    100,874.29x = 11,495,675,545.43
  5. Step 5: Solve for x
    x = 11,495,675,545.43/100,874.29
  6. Step 6: Final answer
    x = 113,960.41

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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.