Home / 101,221.40-139,684.68-55,902.44

Finding the Fourth Proportional to 101,221.40, 139,684.68 and 55,902.44

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Solution

The fourth proportional to 101,221.40, 139,684.68 and 55,902.44 is: 77,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,221.40 : 139,684.68 = 55,902.44 : x
  2. Step 2: Convert to fraction form
    101,221.40/139,684.68 = 55,902.44/x
  3. Step 3: Cross multiply
    101,221.40x = 139,684.68 × 55,902.44
  4. Step 4: Simplify right side
    101,221.40x = 7,808,714,442.62
  5. Step 5: Solve for x
    x = 7,808,714,442.62/101,221.40
  6. Step 6: Final answer
    x = 77,144.90

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1.5x scale

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.