Home / 128,924.28-177,917.05-71,564.73

Finding the Fourth Proportional to 128,924.28, 177,917.05 and 71,564.73

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Solution

The fourth proportional to 128,924.28, 177,917.05 and 71,564.73 is: 98,760.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,924.28 : 177,917.05 = 71,564.73 : x
  2. Step 2: Convert to fraction form
    128,924.28/177,917.05 = 71,564.73/x
  3. Step 3: Cross multiply
    128,924.28x = 177,917.05 × 71,564.73
  4. Step 4: Simplify right side
    128,924.28x = 12,732,586,620.11
  5. Step 5: Solve for x
    x = 12,732,586,620.11/128,924.28
  6. Step 6: Final answer
    x = 98,760.19

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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.