Home / 100,949.24-139,317.82-55,635.35

Finding the Fourth Proportional to 100,949.24, 139,317.82 and 55,635.35

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Solution

The fourth proportional to 100,949.24, 139,317.82 and 55,635.35 is: 76,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,949.24 : 139,317.82 = 55,635.35 : x
  2. Step 2: Convert to fraction form
    100,949.24/139,317.82 = 55,635.35/x
  3. Step 3: Cross multiply
    100,949.24x = 139,317.82 × 55,635.35
  4. Step 4: Simplify right side
    100,949.24x = 7,750,994,841.26
  5. Step 5: Solve for x
    x = 7,750,994,841.26/100,949.24
  6. Step 6: Final answer
    x = 76,781.11

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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.