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Finding the Fourth Proportional to 121,745.60, 182,620.80 and 55,173.44

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Solution

The fourth proportional to 121,745.60, 182,620.80 and 55,173.44 is: 82,761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,745.60 : 182,620.80 = 55,173.44 : x
  2. Step 2: Convert to fraction form
    121,745.60/182,620.80 = 55,173.44/x
  3. Step 3: Cross multiply
    121,745.60x = 182,620.80 × 55,173.44
  4. Step 4: Simplify right side
    121,745.60x = 10,075,817,751.55
  5. Step 5: Solve for x
    x = 10,075,817,751.55/121,745.60
  6. Step 6: Final answer
    x = 82,761.25

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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.