Home / 215,189.81-322,447.28-136,137.05

Finding the Fourth Proportional to 215,189.81, 322,447.28 and 136,137.05

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Solution

The fourth proportional to 215,189.81, 322,447.28 and 136,137.05 is: 203,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,189.81 : 322,447.28 = 136,137.05 : x
  2. Step 2: Convert to fraction form
    215,189.81/322,447.28 = 136,137.05/x
  3. Step 3: Cross multiply
    215,189.81x = 322,447.28 × 136,137.05
  4. Step 4: Simplify right side
    215,189.81x = 43,897,019,186.80
  5. Step 5: Solve for x
    x = 43,897,019,186.80/215,189.81
  6. Step 6: Final answer
    x = 203,992.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.