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Finding the Fourth Proportional to 136,320.60, 204,480.90 and 69,738.60

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Solution

The fourth proportional to 136,320.60, 204,480.90 and 69,738.60 is: 104,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,320.60 : 204,480.90 = 69,738.60 : x
  2. Step 2: Convert to fraction form
    136,320.60/204,480.90 = 69,738.60/x
  3. Step 3: Cross multiply
    136,320.60x = 204,480.90 × 69,738.60
  4. Step 4: Simplify right side
    136,320.60x = 14,260,211,692.74
  5. Step 5: Solve for x
    x = 14,260,211,692.74/136,320.60
  6. Step 6: Final answer
    x = 104,607.90

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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.