Home / 118,620.68-178,008.78-43,742.12

Finding the Fourth Proportional to 118,620.68, 178,008.78 and 43,742.12

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Solution

The fourth proportional to 118,620.68, 178,008.78 and 43,742.12 is: 65,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,620.68 : 178,008.78 = 43,742.12 : x
  2. Step 2: Convert to fraction form
    118,620.68/178,008.78 = 43,742.12/x
  3. Step 3: Cross multiply
    118,620.68x = 178,008.78 × 43,742.12
  4. Step 4: Simplify right side
    118,620.68x = 7,786,481,415.81
  5. Step 5: Solve for x
    x = 7,786,481,415.81/118,620.68
  6. Step 6: Final answer
    x = 65,641.85

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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.