Home / 100,763.88-139,074.03-57,772.26

Finding the Fourth Proportional to 100,763.88, 139,074.03 and 57,772.26

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Solution

The fourth proportional to 100,763.88, 139,074.03 and 57,772.26 is: 79,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,763.88 : 139,074.03 = 57,772.26 : x
  2. Step 2: Convert to fraction form
    100,763.88/139,074.03 = 57,772.26/x
  3. Step 3: Cross multiply
    100,763.88x = 139,074.03 × 57,772.26
  4. Step 4: Simplify right side
    100,763.88x = 8,034,621,020.41
  5. Step 5: Solve for x
    x = 8,034,621,020.41/100,763.88
  6. Step 6: Final answer
    x = 79,737.11

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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.