Home / 118,878.21-178,344.65-38,918.76

Finding the Fourth Proportional to 118,878.21, 178,344.65 and 38,918.76

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Solution

The fourth proportional to 118,878.21, 178,344.65 and 38,918.76 is: 58,387.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,878.21 : 178,344.65 = 38,918.76 : x
  2. Step 2: Convert to fraction form
    118,878.21/178,344.65 = 38,918.76/x
  3. Step 3: Cross multiply
    118,878.21x = 178,344.65 × 38,918.76
  4. Step 4: Simplify right side
    118,878.21x = 6,940,951,738.91
  5. Step 5: Solve for x
    x = 6,940,951,738.91/118,878.21
  6. Step 6: Final answer
    x = 58,387.08

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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.