Home / 100,766.72-139,043.40-60,471.92

Finding the Fourth Proportional to 100,766.72, 139,043.40 and 60,471.92

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Solution

The fourth proportional to 100,766.72, 139,043.40 and 60,471.92 is: 83,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,766.72 : 139,043.40 = 60,471.92 : x
  2. Step 2: Convert to fraction form
    100,766.72/139,043.40 = 60,471.92/x
  3. Step 3: Cross multiply
    100,766.72x = 139,043.40 × 60,471.92
  4. Step 4: Simplify right side
    100,766.72x = 8,408,221,361.33
  5. Step 5: Solve for x
    x = 8,408,221,361.33/100,766.72
  6. Step 6: Final answer
    x = 83,442.44

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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.