Home / 118,837.82-178,136.78-74,495.70

Finding the Fourth Proportional to 118,837.82, 178,136.78 and 74,495.70

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Solution

The fourth proportional to 118,837.82, 178,136.78 and 74,495.70 is: 111,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,837.82 : 178,136.78 = 74,495.70 : x
  2. Step 2: Convert to fraction form
    118,837.82/178,136.78 = 74,495.70/x
  3. Step 3: Cross multiply
    118,837.82x = 178,136.78 × 74,495.70
  4. Step 4: Simplify right side
    118,837.82x = 13,270,423,749.37
  5. Step 5: Solve for x
    x = 13,270,423,749.37/118,837.82
  6. Step 6: Final answer
    x = 111,668.36

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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.