Home / 120,161.21-165,823.54-66,449.84

Finding the Fourth Proportional to 120,161.21, 165,823.54 and 66,449.84

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Solution

The fourth proportional to 120,161.21, 165,823.54 and 66,449.84 is: 91,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,161.21 : 165,823.54 = 66,449.84 : x
  2. Step 2: Convert to fraction form
    120,161.21/165,823.54 = 66,449.84/x
  3. Step 3: Cross multiply
    120,161.21x = 165,823.54 × 66,449.84
  4. Step 4: Simplify right side
    120,161.21x = 11,018,946,705.99
  5. Step 5: Solve for x
    x = 11,018,946,705.99/120,161.21
  6. Step 6: Final answer
    x = 91,701.37

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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.