Home / 120,141.08-165,780.22-66,418.84

Finding the Fourth Proportional to 120,141.08, 165,780.22 and 66,418.84

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Solution

The fourth proportional to 120,141.08, 165,780.22 and 66,418.84 is: 91,650.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,141.08 : 165,780.22 = 66,418.84 : x
  2. Step 2: Convert to fraction form
    120,141.08/165,780.22 = 66,418.84/x
  3. Step 3: Cross multiply
    120,141.08x = 165,780.22 × 66,418.84
  4. Step 4: Simplify right side
    120,141.08x = 11,010,929,907.34
  5. Step 5: Solve for x
    x = 11,010,929,907.34/120,141.08
  6. Step 6: Final answer
    x = 91,650.00

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1.5x scale

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.