Home / 118,737.72-178,145.99-38,778.30

Finding the Fourth Proportional to 118,737.72, 178,145.99 and 38,778.30

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Solution

The fourth proportional to 118,737.72, 178,145.99 and 38,778.30 is: 58,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,737.72 : 178,145.99 = 38,778.30 : x
  2. Step 2: Convert to fraction form
    118,737.72/178,145.99 = 38,778.30/x
  3. Step 3: Cross multiply
    118,737.72x = 178,145.99 × 38,778.30
  4. Step 4: Simplify right side
    118,737.72x = 6,908,198,644.02
  5. Step 5: Solve for x
    x = 6,908,198,644.02/118,737.72
  6. Step 6: Final answer
    x = 58,180.32

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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.