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Finding the Fourth Proportional to 92,820.60, 139,230.90 and 61,327.80

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Solution

The fourth proportional to 92,820.60, 139,230.90 and 61,327.80 is: 91,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,820.60 : 139,230.90 = 61,327.80 : x
  2. Step 2: Convert to fraction form
    92,820.60/139,230.90 = 61,327.80/x
  3. Step 3: Cross multiply
    92,820.60x = 139,230.90 × 61,327.80
  4. Step 4: Simplify right side
    92,820.60x = 8,538,724,789.02
  5. Step 5: Solve for x
    x = 8,538,724,789.02/92,820.60
  6. Step 6: Final answer
    x = 91,991.70

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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.