Home / 118,965.09-164,185.55-71,218.43

Finding the Fourth Proportional to 118,965.09, 164,185.55 and 71,218.43

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Solution

The fourth proportional to 118,965.09, 164,185.55 and 71,218.43 is: 98,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,965.09 : 164,185.55 = 71,218.43 : x
  2. Step 2: Convert to fraction form
    118,965.09/164,185.55 = 71,218.43/x
  3. Step 3: Cross multiply
    118,965.09x = 164,185.55 × 71,218.43
  4. Step 4: Simplify right side
    118,965.09x = 11,693,037,099.69
  5. Step 5: Solve for x
    x = 11,693,037,099.69/118,965.09
  6. Step 6: Final answer
    x = 98,289.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.