Home / 128,393.60-192,186.75-88,177.10

Finding the Fourth Proportional to 128,393.60, 192,186.75 and 88,177.10

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Solution

The fourth proportional to 128,393.60, 192,186.75 and 88,177.10 is: 131,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,393.60 : 192,186.75 = 88,177.10 : x
  2. Step 2: Convert to fraction form
    128,393.60/192,186.75 = 88,177.10/x
  3. Step 3: Cross multiply
    128,393.60x = 192,186.75 × 88,177.10
  4. Step 4: Simplify right side
    128,393.60x = 16,946,470,273.43
  5. Step 5: Solve for x
    x = 16,946,470,273.43/128,393.60
  6. Step 6: Final answer
    x = 131,988.43

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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.