Home / 199,760.72-275,539.20-128,027.12

Finding the Fourth Proportional to 199,760.72, 275,539.20 and 128,027.12

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Solution

The fourth proportional to 199,760.72, 275,539.20 and 128,027.12 is: 176,593.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,760.72 : 275,539.20 = 128,027.12 : x
  2. Step 2: Convert to fraction form
    199,760.72/275,539.20 = 128,027.12/x
  3. Step 3: Cross multiply
    199,760.72x = 275,539.20 × 128,027.12
  4. Step 4: Simplify right side
    199,760.72x = 35,276,490,223.10
  5. Step 5: Solve for x
    x = 35,276,490,223.10/199,760.72
  6. Step 6: Final answer
    x = 176,593.73

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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.