Home / 149,242.20-205,947.54-81,257.46

Finding the Fourth Proportional to 149,242.20, 205,947.54 and 81,257.46

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Solution

The fourth proportional to 149,242.20, 205,947.54 and 81,257.46 is: 112,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,242.20 : 205,947.54 = 81,257.46 : x
  2. Step 2: Convert to fraction form
    149,242.20/205,947.54 = 81,257.46/x
  3. Step 3: Cross multiply
    149,242.20x = 205,947.54 × 81,257.46
  4. Step 4: Simplify right side
    149,242.20x = 16,734,773,993.65
  5. Step 5: Solve for x
    x = 16,734,773,993.65/149,242.20
  6. Step 6: Final answer
    x = 112,131.65

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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.