Home / 214,042.72-321,067.68-80,985.64

Finding the Fourth Proportional to 214,042.72, 321,067.68 and 80,985.64

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Solution

The fourth proportional to 214,042.72, 321,067.68 and 80,985.64 is: 121,479.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,042.72 : 321,067.68 = 80,985.64 : x
  2. Step 2: Convert to fraction form
    214,042.72/321,067.68 = 80,985.64/x
  3. Step 3: Cross multiply
    214,042.72x = 321,067.68 × 80,985.64
  4. Step 4: Simplify right side
    214,042.72x = 26,001,871,548.12
  5. Step 5: Solve for x
    x = 26,001,871,548.12/214,042.72
  6. Step 6: Final answer
    x = 121,479.82

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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.