Home / 100,948.59-139,315.23-55,626.58

Finding the Fourth Proportional to 100,948.59, 139,315.23 and 55,626.58

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Solution

The fourth proportional to 100,948.59, 139,315.23 and 55,626.58 is: 76,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,948.59 : 139,315.23 = 55,626.58 : x
  2. Step 2: Convert to fraction form
    100,948.59/139,315.23 = 55,626.58/x
  3. Step 3: Cross multiply
    100,948.59x = 139,315.23 × 55,626.58
  4. Step 4: Simplify right side
    100,948.59x = 7,749,629,960.96
  5. Step 5: Solve for x
    x = 7,749,629,960.96/100,948.59
  6. Step 6: Final answer
    x = 76,768.09

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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.