Home / 118,997.12-178,438.22-69,089.80

Finding the Fourth Proportional to 118,997.12, 178,438.22 and 69,089.80

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Solution

The fourth proportional to 118,997.12, 178,438.22 and 69,089.80 is: 103,601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,997.12 : 178,438.22 = 69,089.80 : x
  2. Step 2: Convert to fraction form
    118,997.12/178,438.22 = 69,089.80/x
  3. Step 3: Cross multiply
    118,997.12x = 178,438.22 × 69,089.80
  4. Step 4: Simplify right side
    118,997.12x = 12,328,260,932.16
  5. Step 5: Solve for x
    x = 12,328,260,932.16/118,997.12
  6. Step 6: Final answer
    x = 103,601.34

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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.