Home / 155,004.57-213,899.01-86,098.50

Finding the Fourth Proportional to 155,004.57, 213,899.01 and 86,098.50

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Solution

The fourth proportional to 155,004.57, 213,899.01 and 86,098.50 is: 118,811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,004.57 : 213,899.01 = 86,098.50 : x
  2. Step 2: Convert to fraction form
    155,004.57/213,899.01 = 86,098.50/x
  3. Step 3: Cross multiply
    155,004.57x = 213,899.01 × 86,098.50
  4. Step 4: Simplify right side
    155,004.57x = 18,416,383,912.49
  5. Step 5: Solve for x
    x = 18,416,383,912.49/155,004.57
  6. Step 6: Final answer
    x = 118,811.88

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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.