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Finding the Fourth Proportional to 106,455.75, 146,919.32 and 79,551.55

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Solution

The fourth proportional to 106,455.75, 146,919.32 and 79,551.55 is: 109,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,455.75 : 146,919.32 = 79,551.55 : x
  2. Step 2: Convert to fraction form
    106,455.75/146,919.32 = 79,551.55/x
  3. Step 3: Cross multiply
    106,455.75x = 146,919.32 × 79,551.55
  4. Step 4: Simplify right side
    106,455.75x = 11,687,659,630.95
  5. Step 5: Solve for x
    x = 11,687,659,630.95/106,455.75
  6. Step 6: Final answer
    x = 109,788.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.