Home / 100,833.27-139,144.91-55,515.21

Finding the Fourth Proportional to 100,833.27, 139,144.91 and 55,515.21

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Solution

The fourth proportional to 100,833.27, 139,144.91 and 55,515.21 is: 76,608.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,833.27 : 139,144.91 = 55,515.21 : x
  2. Step 2: Convert to fraction form
    100,833.27/139,144.91 = 55,515.21/x
  3. Step 3: Cross multiply
    100,833.27x = 139,144.91 × 55,515.21
  4. Step 4: Simplify right side
    100,833.27x = 7,724,658,621.51
  5. Step 5: Solve for x
    x = 7,724,658,621.51/100,833.27
  6. Step 6: Final answer
    x = 76,608.23

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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.