Home / 146,109.54-201,629.20-81,579.78

Finding the Fourth Proportional to 146,109.54, 201,629.20 and 81,579.78

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Solution

The fourth proportional to 146,109.54, 201,629.20 and 81,579.78 is: 112,579.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,109.54 : 201,629.20 = 81,579.78 : x
  2. Step 2: Convert to fraction form
    146,109.54/201,629.20 = 81,579.78/x
  3. Step 3: Cross multiply
    146,109.54x = 201,629.20 × 81,579.78
  4. Step 4: Simplify right side
    146,109.54x = 16,448,865,777.58
  5. Step 5: Solve for x
    x = 16,448,865,777.58/146,109.54
  6. Step 6: Final answer
    x = 112,579.00

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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.