Home / 204,066.72-306,144.60-85,670.64

Finding the Fourth Proportional to 204,066.72, 306,144.60 and 85,670.64

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Solution

The fourth proportional to 204,066.72, 306,144.60 and 85,670.64 is: 128,524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,066.72 : 306,144.60 = 85,670.64 : x
  2. Step 2: Convert to fraction form
    204,066.72/306,144.60 = 85,670.64/x
  3. Step 3: Cross multiply
    204,066.72x = 306,144.60 × 85,670.64
  4. Step 4: Simplify right side
    204,066.72x = 26,227,603,814.54
  5. Step 5: Solve for x
    x = 26,227,603,814.54/204,066.72
  6. Step 6: Final answer
    x = 128,524.65

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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.