Home / 118,713.20-178,083.88-74,343.64

Finding the Fourth Proportional to 118,713.20, 178,083.88 and 74,343.64

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Solution

The fourth proportional to 118,713.20, 178,083.88 and 74,343.64 is: 111,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.20 : 178,083.88 = 74,343.64 : x
  2. Step 2: Convert to fraction form
    118,713.20/178,083.88 = 74,343.64/x
  3. Step 3: Cross multiply
    118,713.20x = 178,083.88 × 74,343.64
  4. Step 4: Simplify right side
    118,713.20x = 13,239,403,864.52
  5. Step 5: Solve for x
    x = 13,239,403,864.52/118,713.20
  6. Step 6: Final answer
    x = 111,524.28

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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.