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Finding the Fourth Proportional to 71,194.20, 106,791.30 and 61,978.20

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Solution

The fourth proportional to 71,194.20, 106,791.30 and 61,978.20 is: 92,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,194.20 : 106,791.30 = 61,978.20 : x
  2. Step 2: Convert to fraction form
    71,194.20/106,791.30 = 61,978.20/x
  3. Step 3: Cross multiply
    71,194.20x = 106,791.30 × 61,978.20
  4. Step 4: Simplify right side
    71,194.20x = 6,618,732,549.66
  5. Step 5: Solve for x
    x = 6,618,732,549.66/71,194.20
  6. Step 6: Final answer
    x = 92,967.30

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1.5x scale

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.