Home / 128,009.38-192,014.17-43,770.18

Finding the Fourth Proportional to 128,009.38, 192,014.17 and 43,770.18

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Solution

The fourth proportional to 128,009.38, 192,014.17 and 43,770.18 is: 65,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,009.38 : 192,014.17 = 43,770.18 : x
  2. Step 2: Convert to fraction form
    128,009.38/192,014.17 = 43,770.18/x
  3. Step 3: Cross multiply
    128,009.38x = 192,014.17 × 43,770.18
  4. Step 4: Simplify right side
    128,009.38x = 8,404,494,674.03
  5. Step 5: Solve for x
    x = 8,404,494,674.03/128,009.38
  6. Step 6: Final answer
    x = 65,655.30

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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.