Home / 100,758.24-139,046.36-55,435.23

Finding the Fourth Proportional to 100,758.24, 139,046.36 and 55,435.23

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Solution

The fourth proportional to 100,758.24, 139,046.36 and 55,435.23 is: 76,500.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,758.24 : 139,046.36 = 55,435.23 : x
  2. Step 2: Convert to fraction form
    100,758.24/139,046.36 = 55,435.23/x
  3. Step 3: Cross multiply
    100,758.24x = 139,046.36 × 55,435.23
  4. Step 4: Simplify right side
    100,758.24x = 7,708,066,670.09
  5. Step 5: Solve for x
    x = 7,708,066,670.09/100,758.24
  6. Step 6: Final answer
    x = 76,500.61

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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.