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Finding the Fourth Proportional to 133,051.88, 183,611.60 and 90,684.42

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Solution

The fourth proportional to 133,051.88, 183,611.60 and 90,684.42 is: 125,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,051.88 : 183,611.60 = 90,684.42 : x
  2. Step 2: Convert to fraction form
    133,051.88/183,611.60 = 90,684.42/x
  3. Step 3: Cross multiply
    133,051.88x = 183,611.60 × 90,684.42
  4. Step 4: Simplify right side
    133,051.88x = 16,650,710,997.85
  5. Step 5: Solve for x
    x = 16,650,710,997.85/133,051.88
  6. Step 6: Final answer
    x = 125,144.50

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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.