Home / 149,392.54-206,159.07-81,410.05

Finding the Fourth Proportional to 149,392.54, 206,159.07 and 81,410.05

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Solution

The fourth proportional to 149,392.54, 206,159.07 and 81,410.05 is: 112,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,392.54 : 206,159.07 = 81,410.05 : x
  2. Step 2: Convert to fraction form
    149,392.54/206,159.07 = 81,410.05/x
  3. Step 3: Cross multiply
    149,392.54x = 206,159.07 × 81,410.05
  4. Step 4: Simplify right side
    149,392.54x = 16,783,420,196.65
  5. Step 5: Solve for x
    x = 16,783,420,196.65/149,392.54
  6. Step 6: Final answer
    x = 112,344.43

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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.