Home / 118,931.20-178,046.88-79,390.24

Finding the Fourth Proportional to 118,931.20, 178,046.88 and 79,390.24

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Solution

The fourth proportional to 118,931.20, 178,046.88 and 79,390.24 is: 118,851.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,931.20 : 178,046.88 = 79,390.24 : x
  2. Step 2: Convert to fraction form
    118,931.20/178,046.88 = 79,390.24/x
  3. Step 3: Cross multiply
    118,931.20x = 178,046.88 × 79,390.24
  4. Step 4: Simplify right side
    118,931.20x = 14,135,183,791.62
  5. Step 5: Solve for x
    x = 14,135,183,791.62/118,931.20
  6. Step 6: Final answer
    x = 118,851.77

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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.