Home / 120,273.75-165,868.14-103,272.66

Finding the Fourth Proportional to 120,273.75, 165,868.14 and 103,272.66

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Solution

The fourth proportional to 120,273.75, 165,868.14 and 103,272.66 is: 142,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,273.75 : 165,868.14 = 103,272.66 : x
  2. Step 2: Convert to fraction form
    120,273.75/165,868.14 = 103,272.66/x
  3. Step 3: Cross multiply
    120,273.75x = 165,868.14 × 103,272.66
  4. Step 4: Simplify right side
    120,273.75x = 17,129,644,027.05
  5. Step 5: Solve for x
    x = 17,129,644,027.05/120,273.75
  6. Step 6: Final answer
    x = 142,422.13

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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.