Home / 120,495.21-166,278.85-66,781.14

Finding the Fourth Proportional to 120,495.21, 166,278.85 and 66,781.14

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Solution

The fourth proportional to 120,495.21, 166,278.85 and 66,781.14 is: 92,155.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,495.21 : 166,278.85 = 66,781.14 : x
  2. Step 2: Convert to fraction form
    120,495.21/166,278.85 = 66,781.14/x
  3. Step 3: Cross multiply
    120,495.21x = 166,278.85 × 66,781.14
  4. Step 4: Simplify right side
    120,495.21x = 11,104,291,160.89
  5. Step 5: Solve for x
    x = 11,104,291,160.89/120,495.21
  6. Step 6: Final answer
    x = 92,155.46

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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.