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Finding the Fourth Proportional to 123,076.40, 184,614.60 and 67,089.20

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Solution

The fourth proportional to 123,076.40, 184,614.60 and 67,089.20 is: 100,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,076.40 : 184,614.60 = 67,089.20 : x
  2. Step 2: Convert to fraction form
    123,076.40/184,614.60 = 67,089.20/x
  3. Step 3: Cross multiply
    123,076.40x = 184,614.60 × 67,089.20
  4. Step 4: Simplify right side
    123,076.40x = 12,385,645,822.32
  5. Step 5: Solve for x
    x = 12,385,645,822.32/123,076.40
  6. Step 6: Final answer
    x = 100,633.80

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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.