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Finding the Fourth Proportional to 128,245.60, 192,022.80 and 92,994.40

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Solution

The fourth proportional to 128,245.60, 192,022.80 and 92,994.40 is: 139,241.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,245.60 : 192,022.80 = 92,994.40 : x
  2. Step 2: Convert to fraction form
    128,245.60/192,022.80 = 92,994.40/x
  3. Step 3: Cross multiply
    128,245.60x = 192,022.80 × 92,994.40
  4. Step 4: Simplify right side
    128,245.60x = 17,857,045,072.32
  5. Step 5: Solve for x
    x = 17,857,045,072.32/128,245.60
  6. Step 6: Final answer
    x = 139,241.00

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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.