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Finding the Fourth Proportional to 123,074.40, 184,611.60 and 67,087.20

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Solution

The fourth proportional to 123,074.40, 184,611.60 and 67,087.20 is: 100,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,074.40 : 184,611.60 = 67,087.20 : x
  2. Step 2: Convert to fraction form
    123,074.40/184,611.60 = 67,087.20/x
  3. Step 3: Cross multiply
    123,074.40x = 184,611.60 × 67,087.20
  4. Step 4: Simplify right side
    123,074.40x = 12,385,075,331.52
  5. Step 5: Solve for x
    x = 12,385,075,331.52/123,074.40
  6. Step 6: Final answer
    x = 100,630.80

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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.