Home / 128,232.20-192,194.70-65,870.60

Finding the Fourth Proportional to 128,232.20, 192,194.70 and 65,870.60

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Solution

The fourth proportional to 128,232.20, 192,194.70 and 65,870.60 is: 98,727.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,232.20 : 192,194.70 = 65,870.60 : x
  2. Step 2: Convert to fraction form
    128,232.20/192,194.70 = 65,870.60/x
  3. Step 3: Cross multiply
    128,232.20x = 192,194.70 × 65,870.60
  4. Step 4: Simplify right side
    128,232.20x = 12,659,980,205.82
  5. Step 5: Solve for x
    x = 12,659,980,205.82/128,232.20
  6. Step 6: Final answer
    x = 98,727.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.