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Finding the Fourth Proportional to 101,561.10, 140,154.39 and 55,620.51

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Solution

The fourth proportional to 101,561.10, 140,154.39 and 55,620.51 is: 76,756.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,561.10 : 140,154.39 = 55,620.51 : x
  2. Step 2: Convert to fraction form
    101,561.10/140,154.39 = 55,620.51/x
  3. Step 3: Cross multiply
    101,561.10x = 140,154.39 × 55,620.51
  4. Step 4: Simplify right side
    101,561.10x = 7,795,458,650.54
  5. Step 5: Solve for x
    x = 7,795,458,650.54/101,561.10
  6. Step 6: Final answer
    x = 76,756.34

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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.