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Finding the Fourth Proportional to 84,994.40, 127,245.28 and 75,989.44

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Solution

The fourth proportional to 84,994.40, 127,245.28 and 75,989.44 is: 113,763.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,994.40 : 127,245.28 = 75,989.44 : x
  2. Step 2: Convert to fraction form
    84,994.40/127,245.28 = 75,989.44/x
  3. Step 3: Cross multiply
    84,994.40x = 127,245.28 × 75,989.44
  4. Step 4: Simplify right side
    84,994.40x = 9,669,297,569.84
  5. Step 5: Solve for x
    x = 9,669,297,569.84/84,994.40
  6. Step 6: Final answer
    x = 113,763.94

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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.