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Finding the Fourth Proportional to 193,145.94, 289,800.32 and 74,900.52

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Solution

The fourth proportional to 193,145.94, 289,800.32 and 74,900.52 is: 112,382.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,145.94 : 289,800.32 = 74,900.52 : x
  2. Step 2: Convert to fraction form
    193,145.94/289,800.32 = 74,900.52/x
  3. Step 3: Cross multiply
    193,145.94x = 289,800.32 × 74,900.52
  4. Step 4: Simplify right side
    193,145.94x = 21,706,194,289.66
  5. Step 5: Solve for x
    x = 21,706,194,289.66/193,145.94
  6. Step 6: Final answer
    x = 112,382.35

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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.