Home / 118,747.89-178,127.37-66,117.74

Finding the Fourth Proportional to 118,747.89, 178,127.37 and 66,117.74

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Solution

The fourth proportional to 118,747.89, 178,127.37 and 66,117.74 is: 99,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,747.89 : 178,127.37 = 66,117.74 : x
  2. Step 2: Convert to fraction form
    118,747.89/178,127.37 = 66,117.74/x
  3. Step 3: Cross multiply
    118,747.89x = 178,127.37 × 66,117.74
  4. Step 4: Simplify right side
    118,747.89x = 11,777,378,245.91
  5. Step 5: Solve for x
    x = 11,777,378,245.91/118,747.89
  6. Step 6: Final answer
    x = 99,179.68

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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.