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Finding the Fourth Proportional to 133,341.96, 184,017.62 and 72,909

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Solution

The fourth proportional to 133,341.96, 184,017.62 and 72,909 is: 100,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,341.96 : 184,017.62 = 72,909 : x
  2. Step 2: Convert to fraction form
    133,341.96/184,017.62 = 72,909/x
  3. Step 3: Cross multiply
    133,341.96x = 184,017.62 × 72,909
  4. Step 4: Simplify right side
    133,341.96x = 13,416,540,656.58
  5. Step 5: Solve for x
    x = 13,416,540,656.58/133,341.96
  6. Step 6: Final answer
    x = 100,617.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.