Home / 120,272.12-165,973.05-66,553.95

Finding the Fourth Proportional to 120,272.12, 165,973.05 and 66,553.95

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Solution

The fourth proportional to 120,272.12, 165,973.05 and 66,553.95 is: 91,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,272.12 : 165,973.05 = 66,553.95 : x
  2. Step 2: Convert to fraction form
    120,272.12/165,973.05 = 66,553.95/x
  3. Step 3: Cross multiply
    120,272.12x = 165,973.05 × 66,553.95
  4. Step 4: Simplify right side
    120,272.12x = 11,046,162,071.05
  5. Step 5: Solve for x
    x = 11,046,162,071.05/120,272.12
  6. Step 6: Final answer
    x = 91,843.08

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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.