Home / 101,772.09-140,452.11-56,454.21

Finding the Fourth Proportional to 101,772.09, 140,452.11 and 56,454.21

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Solution

The fourth proportional to 101,772.09, 140,452.11 and 56,454.21 is: 77,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,772.09 : 140,452.11 = 56,454.21 : x
  2. Step 2: Convert to fraction form
    101,772.09/140,452.11 = 56,454.21/x
  3. Step 3: Cross multiply
    101,772.09x = 140,452.11 × 56,454.21
  4. Step 4: Simplify right side
    101,772.09x = 7,929,112,912.88
  5. Step 5: Solve for x
    x = 7,929,112,912.88/101,772.09
  6. Step 6: Final answer
    x = 77,910.49

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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.