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Finding the Fourth Proportional to 193,642.35, 290,376.04 and 68,986.59

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Solution

The fourth proportional to 193,642.35, 290,376.04 and 68,986.59 is: 103,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,642.35 : 290,376.04 = 68,986.59 : x
  2. Step 2: Convert to fraction form
    193,642.35/290,376.04 = 68,986.59/x
  3. Step 3: Cross multiply
    193,642.35x = 290,376.04 × 68,986.59
  4. Step 4: Simplify right side
    193,642.35x = 20,032,052,817.30
  5. Step 5: Solve for x
    x = 20,032,052,817.30/193,642.35
  6. Step 6: Final answer
    x = 103,448.72

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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.