Home / 149,025.43-205,656.47-81,043.05

Finding the Fourth Proportional to 149,025.43, 205,656.47 and 81,043.05

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Solution

The fourth proportional to 149,025.43, 205,656.47 and 81,043.05 is: 111,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,025.43 : 205,656.47 = 81,043.05 : x
  2. Step 2: Convert to fraction form
    149,025.43/205,656.47 = 81,043.05/x
  3. Step 3: Cross multiply
    149,025.43x = 205,656.47 × 81,043.05
  4. Step 4: Simplify right side
    149,025.43x = 16,667,027,581.03
  5. Step 5: Solve for x
    x = 16,667,027,581.03/149,025.43
  6. Step 6: Final answer
    x = 111,840.16

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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.