Home / 100,033.26-138,040.83-55,312.62

Finding the Fourth Proportional to 100,033.26, 138,040.83 and 55,312.62

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Solution

The fourth proportional to 100,033.26, 138,040.83 and 55,312.62 is: 76,328.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,033.26 : 138,040.83 = 55,312.62 : x
  2. Step 2: Convert to fraction form
    100,033.26/138,040.83 = 55,312.62/x
  3. Step 3: Cross multiply
    100,033.26x = 138,040.83 × 55,312.62
  4. Step 4: Simplify right side
    100,033.26x = 7,635,399,974.27
  5. Step 5: Solve for x
    x = 7,635,399,974.27/100,033.26
  6. Step 6: Final answer
    x = 76,328.61

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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.