Home / 128,273.20-177,016.60-71,684.56

Finding the Fourth Proportional to 128,273.20, 177,016.60 and 71,684.56

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Solution

The fourth proportional to 128,273.20, 177,016.60 and 71,684.56 is: 98,924.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.20 : 177,016.60 = 71,684.56 : x
  2. Step 2: Convert to fraction form
    128,273.20/177,016.60 = 71,684.56/x
  3. Step 3: Cross multiply
    128,273.20x = 177,016.60 × 71,684.56
  4. Step 4: Simplify right side
    128,273.20x = 12,689,357,083.70
  5. Step 5: Solve for x
    x = 12,689,357,083.70/128,273.20
  6. Step 6: Final answer
    x = 98,924.46

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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.