Home / 100,834-139,150.92-56,121.04

Finding the Fourth Proportional to 100,834, 139,150.92 and 56,121.04

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Solution

The fourth proportional to 100,834, 139,150.92 and 56,121.04 is: 77,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,834 : 139,150.92 = 56,121.04 : x
  2. Step 2: Convert to fraction form
    100,834/139,150.92 = 56,121.04/x
  3. Step 3: Cross multiply
    100,834x = 139,150.92 × 56,121.04
  4. Step 4: Simplify right side
    100,834x = 7,809,294,347.36
  5. Step 5: Solve for x
    x = 7,809,294,347.36/100,834
  6. Step 6: Final answer
    x = 77,447.04

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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.