Home / 128,592.10-177,436.41-80,811.62

Finding the Fourth Proportional to 128,592.10, 177,436.41 and 80,811.62

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Solution

The fourth proportional to 128,592.10, 177,436.41 and 80,811.62 is: 111,507.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,592.10 : 177,436.41 = 80,811.62 : x
  2. Step 2: Convert to fraction form
    128,592.10/177,436.41 = 80,811.62/x
  3. Step 3: Cross multiply
    128,592.10x = 177,436.41 × 80,811.62
  4. Step 4: Simplify right side
    128,592.10x = 14,338,923,739.08
  5. Step 5: Solve for x
    x = 14,338,923,739.08/128,592.10
  6. Step 6: Final answer
    x = 111,507.03

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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.