Home / 81,201.15-112,548.92-76,529.16

Finding the Fourth Proportional to 81,201.15, 112,548.92 and 76,529.16

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Solution

The fourth proportional to 81,201.15, 112,548.92 and 76,529.16 is: 106,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,201.15 : 112,548.92 = 76,529.16 : x
  2. Step 2: Convert to fraction form
    81,201.15/112,548.92 = 76,529.16/x
  3. Step 3: Cross multiply
    81,201.15x = 112,548.92 × 76,529.16
  4. Step 4: Simplify right side
    81,201.15x = 8,613,273,923.86
  5. Step 5: Solve for x
    x = 8,613,273,923.86/81,201.15
  6. Step 6: Final answer
    x = 106,073.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.