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Finding the Fourth Proportional to 120,673.77, 181,039.93 and 36,428.90

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Solution

The fourth proportional to 120,673.77, 181,039.93 and 36,428.90 is: 54,652.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,673.77 : 181,039.93 = 36,428.90 : x
  2. Step 2: Convert to fraction form
    120,673.77/181,039.93 = 36,428.90/x
  3. Step 3: Cross multiply
    120,673.77x = 181,039.93 × 36,428.90
  4. Step 4: Simplify right side
    120,673.77x = 6,595,085,505.98
  5. Step 5: Solve for x
    x = 6,595,085,505.98/120,673.77
  6. Step 6: Final answer
    x = 54,652.19

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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.