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Finding the Fourth Proportional to 201,778.56, 302,670.24 and 68,661.52

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Solution

The fourth proportional to 201,778.56, 302,670.24 and 68,661.52 is: 102,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,778.56 : 302,670.24 = 68,661.52 : x
  2. Step 2: Convert to fraction form
    201,778.56/302,670.24 = 68,661.52/x
  3. Step 3: Cross multiply
    201,778.56x = 302,670.24 × 68,661.52
  4. Step 4: Simplify right side
    201,778.56x = 20,781,798,737.16
  5. Step 5: Solve for x
    x = 20,781,798,737.16/201,778.56
  6. Step 6: Final answer
    x = 102,993.10

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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.