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Finding the Fourth Proportional to 119,777.94, 179,669.34 and 80,411.94

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Solution

The fourth proportional to 119,777.94, 179,669.34 and 80,411.94 is: 120,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,777.94 : 179,669.34 = 80,411.94 : x
  2. Step 2: Convert to fraction form
    119,777.94/179,669.34 = 80,411.94/x
  3. Step 3: Cross multiply
    119,777.94x = 179,669.34 × 80,411.94
  4. Step 4: Simplify right side
    119,777.94x = 14,447,560,187.92
  5. Step 5: Solve for x
    x = 14,447,560,187.92/119,777.94
  6. Step 6: Final answer
    x = 120,619.54

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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.