Home / 128,879.04-177,771.24-93,121.56

Finding the Fourth Proportional to 128,879.04, 177,771.24 and 93,121.56

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Solution

The fourth proportional to 128,879.04, 177,771.24 and 93,121.56 is: 128,448.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,879.04 : 177,771.24 = 93,121.56 : x
  2. Step 2: Convert to fraction form
    128,879.04/177,771.24 = 93,121.56/x
  3. Step 3: Cross multiply
    128,879.04x = 177,771.24 × 93,121.56
  4. Step 4: Simplify right side
    128,879.04x = 16,554,335,191.93
  5. Step 5: Solve for x
    x = 16,554,335,191.93/128,879.04
  6. Step 6: Final answer
    x = 128,448.62

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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.