Home / 120,008.39-165,604.64-71,664.75

Finding the Fourth Proportional to 120,008.39, 165,604.64 and 71,664.75

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Solution

The fourth proportional to 120,008.39, 165,604.64 and 71,664.75 is: 98,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,008.39 : 165,604.64 = 71,664.75 : x
  2. Step 2: Convert to fraction form
    120,008.39/165,604.64 = 71,664.75/x
  3. Step 3: Cross multiply
    120,008.39x = 165,604.64 × 71,664.75
  4. Step 4: Simplify right side
    120,008.39x = 11,868,014,766.12
  5. Step 5: Solve for x
    x = 11,868,014,766.12/120,008.39
  6. Step 6: Final answer
    x = 98,893.21

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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.