Home / 101,119.83-140,135.16-99,692.81

Finding the Fourth Proportional to 101,119.83, 140,135.16 and 99,692.81

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Solution

The fourth proportional to 101,119.83, 140,135.16 and 99,692.81 is: 138,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,119.83 : 140,135.16 = 99,692.81 : x
  2. Step 2: Convert to fraction form
    101,119.83/140,135.16 = 99,692.81/x
  3. Step 3: Cross multiply
    101,119.83x = 140,135.16 × 99,692.81
  4. Step 4: Simplify right side
    101,119.83x = 13,970,468,078.88
  5. Step 5: Solve for x
    x = 13,970,468,078.88/101,119.83
  6. Step 6: Final answer
    x = 138,157.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.