Home / 149,313.88-206,047.02-81,329.50

Finding the Fourth Proportional to 149,313.88, 206,047.02 and 81,329.50

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Solution

The fourth proportional to 149,313.88, 206,047.02 and 81,329.50 is: 112,231.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,313.88 : 206,047.02 = 81,329.50 : x
  2. Step 2: Convert to fraction form
    149,313.88/206,047.02 = 81,329.50/x
  3. Step 3: Cross multiply
    149,313.88x = 206,047.02 × 81,329.50
  4. Step 4: Simplify right side
    149,313.88x = 16,757,701,113.09
  5. Step 5: Solve for x
    x = 16,757,701,113.09/149,313.88
  6. Step 6: Final answer
    x = 112,231.37

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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.