Home / 109,128.06-150,645.24-84,874.14

Finding the Fourth Proportional to 109,128.06, 150,645.24 and 84,874.14

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Solution

The fourth proportional to 109,128.06, 150,645.24 and 84,874.14 is: 117,164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,128.06 : 150,645.24 = 84,874.14 : x
  2. Step 2: Convert to fraction form
    109,128.06/150,645.24 = 84,874.14/x
  3. Step 3: Cross multiply
    109,128.06x = 150,645.24 × 84,874.14
  4. Step 4: Simplify right side
    109,128.06x = 12,785,885,190.09
  5. Step 5: Solve for x
    x = 12,785,885,190.09/109,128.06
  6. Step 6: Final answer
    x = 117,164.05

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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.