Home / 118,911.20-178,366.80-52,280.60

Finding the Fourth Proportional to 118,911.20, 178,366.80 and 52,280.60

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Solution

The fourth proportional to 118,911.20, 178,366.80 and 52,280.60 is: 78,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,911.20 : 178,366.80 = 52,280.60 : x
  2. Step 2: Convert to fraction form
    118,911.20/178,366.80 = 52,280.60/x
  3. Step 3: Cross multiply
    118,911.20x = 178,366.80 × 52,280.60
  4. Step 4: Simplify right side
    118,911.20x = 9,325,123,324.08
  5. Step 5: Solve for x
    x = 9,325,123,324.08/118,911.20
  6. Step 6: Final answer
    x = 78,420.90

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1.5x scale

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.