Home / 121,302.48-181,986.66-68,748.87

Finding the Fourth Proportional to 121,302.48, 181,986.66 and 68,748.87

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Solution

The fourth proportional to 121,302.48, 181,986.66 and 68,748.87 is: 103,141.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,302.48 : 181,986.66 = 68,748.87 : x
  2. Step 2: Convert to fraction form
    121,302.48/181,986.66 = 68,748.87/x
  3. Step 3: Cross multiply
    121,302.48x = 181,986.66 × 68,748.87
  4. Step 4: Simplify right side
    121,302.48x = 12,511,377,230.07
  5. Step 5: Solve for x
    x = 12,511,377,230.07/121,302.48
  6. Step 6: Final answer
    x = 103,141.97

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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.