Home / 128,106.23-176,786.60-71,517.60

Finding the Fourth Proportional to 128,106.23, 176,786.60 and 71,517.60

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Solution

The fourth proportional to 128,106.23, 176,786.60 and 71,517.60 is: 98,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,106.23 : 176,786.60 = 71,517.60 : x
  2. Step 2: Convert to fraction form
    128,106.23/176,786.60 = 71,517.60/x
  3. Step 3: Cross multiply
    128,106.23x = 176,786.60 × 71,517.60
  4. Step 4: Simplify right side
    128,106.23x = 12,643,352,986.57
  5. Step 5: Solve for x
    x = 12,643,352,986.57/128,106.23
  6. Step 6: Final answer
    x = 98,694.29

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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.