Home / 218,221.21-301,142.37-122,727.90

Finding the Fourth Proportional to 218,221.21, 301,142.37 and 122,727.90

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Solution

The fourth proportional to 218,221.21, 301,142.37 and 122,727.90 is: 169,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,221.21 : 301,142.37 = 122,727.90 : x
  2. Step 2: Convert to fraction form
    218,221.21/301,142.37 = 122,727.90/x
  3. Step 3: Cross multiply
    218,221.21x = 301,142.37 × 122,727.90
  4. Step 4: Simplify right side
    218,221.21x = 36,958,570,671.12
  5. Step 5: Solve for x
    x = 36,958,570,671.12/218,221.21
  6. Step 6: Final answer
    x = 169,362.87

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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.