Home / 100,849.13-139,175.12-55,530.44

Finding the Fourth Proportional to 100,849.13, 139,175.12 and 55,530.44

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Solution

The fourth proportional to 100,849.13, 139,175.12 and 55,530.44 is: 76,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,849.13 : 139,175.12 = 55,530.44 : x
  2. Step 2: Convert to fraction form
    100,849.13/139,175.12 = 55,530.44/x
  3. Step 3: Cross multiply
    100,849.13x = 139,175.12 × 55,530.44
  4. Step 4: Simplify right side
    100,849.13x = 7,728,455,373.00
  5. Step 5: Solve for x
    x = 7,728,455,373.00/100,849.13
  6. Step 6: Final answer
    x = 76,633.83

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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.