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Finding the Fourth Proportional to 122,685.40, 184,028.06 and 39,579.40

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Solution

The fourth proportional to 122,685.40, 184,028.06 and 39,579.40 is: 59,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,685.40 : 184,028.06 = 39,579.40 : x
  2. Step 2: Convert to fraction form
    122,685.40/184,028.06 = 39,579.40/x
  3. Step 3: Cross multiply
    122,685.40x = 184,028.06 × 39,579.40
  4. Step 4: Simplify right side
    122,685.40x = 7,283,720,197.96
  5. Step 5: Solve for x
    x = 7,283,720,197.96/122,685.40
  6. Step 6: Final answer
    x = 59,369.09

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Similar ratio
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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.