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Finding the Fourth Proportional to 123,026.60, 184,539.90 and 121,989.80

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Solution

The fourth proportional to 123,026.60, 184,539.90 and 121,989.80 is: 182,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,026.60 : 184,539.90 = 121,989.80 : x
  2. Step 2: Convert to fraction form
    123,026.60/184,539.90 = 121,989.80/x
  3. Step 3: Cross multiply
    123,026.60x = 184,539.90 × 121,989.80
  4. Step 4: Simplify right side
    123,026.60x = 22,511,985,493.02
  5. Step 5: Solve for x
    x = 22,511,985,493.02/123,026.60
  6. Step 6: Final answer
    x = 182,984.70

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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.