Home / 118,965.47-164,186.06-71,218.80

Finding the Fourth Proportional to 118,965.47, 164,186.06 and 71,218.80

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Solution

The fourth proportional to 118,965.47, 164,186.06 and 71,218.80 is: 98,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,965.47 : 164,186.06 = 71,218.80 : x
  2. Step 2: Convert to fraction form
    118,965.47/164,186.06 = 71,218.80/x
  3. Step 3: Cross multiply
    118,965.47x = 164,186.06 × 71,218.80
  4. Step 4: Simplify right side
    118,965.47x = 11,693,134,169.93
  5. Step 5: Solve for x
    x = 11,693,134,169.93/118,965.47
  6. Step 6: Final answer
    x = 98,290.15

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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.