Home / 121,288.28-181,965.22-68,734.67

Finding the Fourth Proportional to 121,288.28, 181,965.22 and 68,734.67

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Solution

The fourth proportional to 121,288.28, 181,965.22 and 68,734.67 is: 103,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,288.28 : 181,965.22 = 68,734.67 : x
  2. Step 2: Convert to fraction form
    121,288.28/181,965.22 = 68,734.67/x
  3. Step 3: Cross multiply
    121,288.28x = 181,965.22 × 68,734.67
  4. Step 4: Simplify right side
    121,288.28x = 12,507,318,266.51
  5. Step 5: Solve for x
    x = 12,507,318,266.51/121,288.28
  6. Step 6: Final answer
    x = 103,120.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.