Home / 118,979.80-178,469.70-99,734.20

Finding the Fourth Proportional to 118,979.80, 178,469.70 and 99,734.20

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Solution

The fourth proportional to 118,979.80, 178,469.70 and 99,734.20 is: 149,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.80 : 178,469.70 = 99,734.20 : x
  2. Step 2: Convert to fraction form
    118,979.80/178,469.70 = 99,734.20/x
  3. Step 3: Cross multiply
    118,979.80x = 178,469.70 × 99,734.20
  4. Step 4: Simplify right side
    118,979.80x = 17,799,532,753.74
  5. Step 5: Solve for x
    x = 17,799,532,753.74/118,979.80
  6. Step 6: Final answer
    x = 149,601.30

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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.