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Finding the Fourth Proportional to 123,173.20, 184,468.20 and 83,515.60

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Solution

The fourth proportional to 123,173.20, 184,468.20 and 83,515.60 is: 125,075.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,173.20 : 184,468.20 = 83,515.60 : x
  2. Step 2: Convert to fraction form
    123,173.20/184,468.20 = 83,515.60/x
  3. Step 3: Cross multiply
    123,173.20x = 184,468.20 × 83,515.60
  4. Step 4: Simplify right side
    123,173.20x = 15,405,972,403.92
  5. Step 5: Solve for x
    x = 15,405,972,403.92/123,173.20
  6. Step 6: Final answer
    x = 125,075.69

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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.