Home / 120,143.31-181,025.97-99,541.77

Finding the Fourth Proportional to 120,143.31, 181,025.97 and 99,541.77

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Solution

The fourth proportional to 120,143.31, 181,025.97 and 99,541.77 is: 149,984.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,143.31 : 181,025.97 = 99,541.77 : x
  2. Step 2: Convert to fraction form
    120,143.31/181,025.97 = 99,541.77/x
  3. Step 3: Cross multiply
    120,143.31x = 181,025.97 × 99,541.77
  4. Step 4: Simplify right side
    120,143.31x = 18,019,645,469.77
  5. Step 5: Solve for x
    x = 18,019,645,469.77/120,143.31
  6. Step 6: Final answer
    x = 149,984.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.