Home / 128,273.80-177,080.97-80,553.46

Finding the Fourth Proportional to 128,273.80, 177,080.97 and 80,553.46

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Solution

The fourth proportional to 128,273.80, 177,080.97 and 80,553.46 is: 111,203.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.80 : 177,080.97 = 80,553.46 : x
  2. Step 2: Convert to fraction form
    128,273.80/177,080.97 = 80,553.46/x
  3. Step 3: Cross multiply
    128,273.80x = 177,080.97 × 80,553.46
  4. Step 4: Simplify right side
    128,273.80x = 14,264,484,833.66
  5. Step 5: Solve for x
    x = 14,264,484,833.66/128,273.80
  6. Step 6: Final answer
    x = 111,203.42

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1.5x scale

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.