Home / 118,829.09-178,123.64-74,486.97

Finding the Fourth Proportional to 118,829.09, 178,123.64 and 74,486.97

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Solution

The fourth proportional to 118,829.09, 178,123.64 and 74,486.97 is: 111,655.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,829.09 : 178,123.64 = 74,486.97 : x
  2. Step 2: Convert to fraction form
    118,829.09/178,123.64 = 74,486.97/x
  3. Step 3: Cross multiply
    118,829.09x = 178,123.64 × 74,486.97
  4. Step 4: Simplify right side
    118,829.09x = 13,267,889,856.54
  5. Step 5: Solve for x
    x = 13,267,889,856.54/118,829.09
  6. Step 6: Final answer
    x = 111,655.23

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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.