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Finding the Fourth Proportional to 193,692.61, 290,372.51 and 67,316.43

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Solution

The fourth proportional to 193,692.61, 290,372.51 and 67,316.43 is: 100,916.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,692.61 : 290,372.51 = 67,316.43 : x
  2. Step 2: Convert to fraction form
    193,692.61/290,372.51 = 67,316.43/x
  3. Step 3: Cross multiply
    193,692.61x = 290,372.51 × 67,316.43
  4. Step 4: Simplify right side
    193,692.61x = 19,546,842,000.53
  5. Step 5: Solve for x
    x = 19,546,842,000.53/193,692.61
  6. Step 6: Final answer
    x = 100,916.82

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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.