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Finding the Fourth Proportional to 125,478.93, 188,178.47 and 41,219.54

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Solution

The fourth proportional to 125,478.93, 188,178.47 and 41,219.54 is: 61,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,478.93 : 188,178.47 = 41,219.54 : x
  2. Step 2: Convert to fraction form
    125,478.93/188,178.47 = 41,219.54/x
  3. Step 3: Cross multiply
    125,478.93x = 188,178.47 × 41,219.54
  4. Step 4: Simplify right side
    125,478.93x = 7,756,629,971.30
  5. Step 5: Solve for x
    x = 7,756,629,971.30/125,478.93
  6. Step 6: Final answer
    x = 61,816.19

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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.