Home / 149,979.36-206,967.60-81,994.32

Finding the Fourth Proportional to 149,979.36, 206,967.60 and 81,994.32

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Solution

The fourth proportional to 149,979.36, 206,967.60 and 81,994.32 is: 113,150.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,979.36 : 206,967.60 = 81,994.32 : x
  2. Step 2: Convert to fraction form
    149,979.36/206,967.60 = 81,994.32/x
  3. Step 3: Cross multiply
    149,979.36x = 206,967.60 × 81,994.32
  4. Step 4: Simplify right side
    149,979.36x = 16,970,167,624.03
  5. Step 5: Solve for x
    x = 16,970,167,624.03/149,979.36
  6. Step 6: Final answer
    x = 113,150.02

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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.