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Finding the Fourth Proportional to 133,321.55, 199,490.93 and 80,045.91

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Solution

The fourth proportional to 133,321.55, 199,490.93 and 80,045.91 is: 119,773.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,321.55 : 199,490.93 = 80,045.91 : x
  2. Step 2: Convert to fraction form
    133,321.55/199,490.93 = 80,045.91/x
  3. Step 3: Cross multiply
    133,321.55x = 199,490.93 × 80,045.91
  4. Step 4: Simplify right side
    133,321.55x = 15,968,432,628.37
  5. Step 5: Solve for x
    x = 15,968,432,628.37/133,321.55
  6. Step 6: Final answer
    x = 119,773.83

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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.