Home / 128,090.20-192,004.05-53,253.80

Finding the Fourth Proportional to 128,090.20, 192,004.05 and 53,253.80

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Solution

The fourth proportional to 128,090.20, 192,004.05 and 53,253.80 is: 79,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,090.20 : 192,004.05 = 53,253.80 : x
  2. Step 2: Convert to fraction form
    128,090.20/192,004.05 = 53,253.80/x
  3. Step 3: Cross multiply
    128,090.20x = 192,004.05 × 53,253.80
  4. Step 4: Simplify right side
    128,090.20x = 10,224,945,277.89
  5. Step 5: Solve for x
    x = 10,224,945,277.89/128,090.20
  6. Step 6: Final answer
    x = 79,826.13

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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.