Home / 104,771.57-144,649.37-72,121.73

Finding the Fourth Proportional to 104,771.57, 144,649.37 and 72,121.73

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Solution

The fourth proportional to 104,771.57, 144,649.37 and 72,121.73 is: 99,572.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,771.57 : 144,649.37 = 72,121.73 : x
  2. Step 2: Convert to fraction form
    104,771.57/144,649.37 = 72,121.73/x
  3. Step 3: Cross multiply
    104,771.57x = 144,649.37 × 72,121.73
  4. Step 4: Simplify right side
    104,771.57x = 10,432,362,447.20
  5. Step 5: Solve for x
    x = 10,432,362,447.20/104,771.57
  6. Step 6: Final answer
    x = 99,572.46

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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.