Home / 149,722.16-206,607.78-81,725.64

Finding the Fourth Proportional to 149,722.16, 206,607.78 and 81,725.64

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Solution

The fourth proportional to 149,722.16, 206,607.78 and 81,725.64 is: 112,776.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,722.16 : 206,607.78 = 81,725.64 : x
  2. Step 2: Convert to fraction form
    149,722.16/206,607.78 = 81,725.64/x
  3. Step 3: Cross multiply
    149,722.16x = 206,607.78 × 81,725.64
  4. Step 4: Simplify right side
    149,722.16x = 16,885,153,049.48
  5. Step 5: Solve for x
    x = 16,885,153,049.48/149,722.16
  6. Step 6: Final answer
    x = 112,776.58

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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.