Home / 120,678.26-166,377.54-103,862.96

Finding the Fourth Proportional to 120,678.26, 166,377.54 and 103,862.96

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Solution

The fourth proportional to 120,678.26, 166,377.54 and 103,862.96 is: 143,194.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,678.26 : 166,377.54 = 103,862.96 : x
  2. Step 2: Convert to fraction form
    120,678.26/166,377.54 = 103,862.96/x
  3. Step 3: Cross multiply
    120,678.26x = 166,377.54 × 103,862.96
  4. Step 4: Simplify right side
    120,678.26x = 17,280,463,963.43
  5. Step 5: Solve for x
    x = 17,280,463,963.43/120,678.26
  6. Step 6: Final answer
    x = 143,194.51

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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.