Home / 128,889.04-177,785.04-93,131.56

Finding the Fourth Proportional to 128,889.04, 177,785.04 and 93,131.56

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Solution

The fourth proportional to 128,889.04, 177,785.04 and 93,131.56 is: 128,462.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889.04 : 177,785.04 = 93,131.56 : x
  2. Step 2: Convert to fraction form
    128,889.04/177,785.04 = 93,131.56/x
  3. Step 3: Cross multiply
    128,889.04x = 177,785.04 × 93,131.56
  4. Step 4: Simplify right side
    128,889.04x = 16,557,398,119.86
  5. Step 5: Solve for x
    x = 16,557,398,119.86/128,889.04
  6. Step 6: Final answer
    x = 128,462.42

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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.