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Finding the Fourth Proportional to 115,993.82, 173,994.35 and 55,190.77

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Solution

The fourth proportional to 115,993.82, 173,994.35 and 55,190.77 is: 82,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,993.82 : 173,994.35 = 55,190.77 : x
  2. Step 2: Convert to fraction form
    115,993.82/173,994.35 = 55,190.77/x
  3. Step 3: Cross multiply
    115,993.82x = 173,994.35 × 55,190.77
  4. Step 4: Simplify right side
    115,993.82x = 9,602,881,441.21
  5. Step 5: Solve for x
    x = 9,602,881,441.21/115,993.82
  6. Step 6: Final answer
    x = 82,787.87

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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.