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Finding the Fourth Proportional to 149,762.00, 206,679.99 and 81,785.30

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Solution

The fourth proportional to 149,762.00, 206,679.99 and 81,785.30 is: 112,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,762.00 : 206,679.99 = 81,785.30 : x
  2. Step 2: Convert to fraction form
    149,762.00/206,679.99 = 81,785.30/x
  3. Step 3: Cross multiply
    149,762.00x = 206,679.99 × 81,785.30
  4. Step 4: Simplify right side
    149,762.00x = 16,903,383,952.75
  5. Step 5: Solve for x
    x = 16,903,383,952.75/149,762.00
  6. Step 6: Final answer
    x = 112,868.31

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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.