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Finding the Fourth Proportional to 120,866.55, 181,299.87 and 45,969.39

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Solution

The fourth proportional to 120,866.55, 181,299.87 and 45,969.39 is: 68,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,866.55 : 181,299.87 = 45,969.39 : x
  2. Step 2: Convert to fraction form
    120,866.55/181,299.87 = 45,969.39/x
  3. Step 3: Cross multiply
    120,866.55x = 181,299.87 × 45,969.39
  4. Step 4: Simplify right side
    120,866.55x = 8,334,244,430.98
  5. Step 5: Solve for x
    x = 8,334,244,430.98/120,866.55
  6. Step 6: Final answer
    x = 68,954.10

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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.