Home / 120,218.22-165,907.20-72,486.96

Finding the Fourth Proportional to 120,218.22, 165,907.20 and 72,486.96

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Solution

The fourth proportional to 120,218.22, 165,907.20 and 72,486.96 is: 100,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,218.22 : 165,907.20 = 72,486.96 : x
  2. Step 2: Convert to fraction form
    120,218.22/165,907.20 = 72,486.96/x
  3. Step 3: Cross multiply
    120,218.22x = 165,907.20 × 72,486.96
  4. Step 4: Simplify right side
    120,218.22x = 12,026,108,570.11
  5. Step 5: Solve for x
    x = 12,026,108,570.11/120,218.22
  6. Step 6: Final answer
    x = 100,035.66

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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.