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Finding the Fourth Proportional to 92,778.30, 139,167.45 and 42,843.62

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Solution

The fourth proportional to 92,778.30, 139,167.45 and 42,843.62 is: 64,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,778.30 : 139,167.45 = 42,843.62 : x
  2. Step 2: Convert to fraction form
    92,778.30/139,167.45 = 42,843.62/x
  3. Step 3: Cross multiply
    92,778.30x = 139,167.45 × 42,843.62
  4. Step 4: Simplify right side
    92,778.30x = 5,962,437,692.09
  5. Step 5: Solve for x
    x = 5,962,437,692.09/92,778.30
  6. Step 6: Final answer
    x = 64,265.43

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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.