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Finding the Fourth Proportional to 133,718.90, 184,507.89 and 85,961.30

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Solution

The fourth proportional to 133,718.90, 184,507.89 and 85,961.30 is: 118,611.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,718.90 : 184,507.89 = 85,961.30 : x
  2. Step 2: Convert to fraction form
    133,718.90/184,507.89 = 85,961.30/x
  3. Step 3: Cross multiply
    133,718.90x = 184,507.89 × 85,961.30
  4. Step 4: Simplify right side
    133,718.90x = 15,860,538,084.66
  5. Step 5: Solve for x
    x = 15,860,538,084.66/133,718.90
  6. Step 6: Final answer
    x = 118,611.04

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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.