Home / 149,962.13-206,947.23-81,979.10

Finding the Fourth Proportional to 149,962.13, 206,947.23 and 81,979.10

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Solution

The fourth proportional to 149,962.13, 206,947.23 and 81,979.10 is: 113,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,962.13 : 206,947.23 = 81,979.10 : x
  2. Step 2: Convert to fraction form
    149,962.13/206,947.23 = 81,979.10/x
  3. Step 3: Cross multiply
    149,962.13x = 206,947.23 × 81,979.10
  4. Step 4: Simplify right side
    149,962.13x = 16,965,347,662.89
  5. Step 5: Solve for x
    x = 16,965,347,662.89/149,962.13
  6. Step 6: Final answer
    x = 113,130.88

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1.5x scale

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.