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Finding the Fourth Proportional to 120,611.84, 180,918.23 and 50,441.94

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Solution

The fourth proportional to 120,611.84, 180,918.23 and 50,441.94 is: 75,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,611.84 : 180,918.23 = 50,441.94 : x
  2. Step 2: Convert to fraction form
    120,611.84/180,918.23 = 50,441.94/x
  3. Step 3: Cross multiply
    120,611.84x = 180,918.23 × 50,441.94
  4. Step 4: Simplify right side
    120,611.84x = 9,125,866,250.36
  5. Step 5: Solve for x
    x = 9,125,866,250.36/120,611.84
  6. Step 6: Final answer
    x = 75,663.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.