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Finding the Fourth Proportional to 128,697.34, 192,997.41 and 62,115.34

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Solution

The fourth proportional to 128,697.34, 192,997.41 and 62,115.34 is: 93,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,697.34 : 192,997.41 = 62,115.34 : x
  2. Step 2: Convert to fraction form
    128,697.34/192,997.41 = 62,115.34/x
  3. Step 3: Cross multiply
    128,697.34x = 192,997.41 × 62,115.34
  4. Step 4: Simplify right side
    128,697.34x = 11,988,099,741.27
  5. Step 5: Solve for x
    x = 11,988,099,741.27/128,697.34
  6. Step 6: Final answer
    x = 93,149.55

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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.