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Finding the Fourth Proportional to 133,408.72, 184,103.96 and 72,979.34

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Solution

The fourth proportional to 133,408.72, 184,103.96 and 72,979.34 is: 100,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,408.72 : 184,103.96 = 72,979.34 : x
  2. Step 2: Convert to fraction form
    133,408.72/184,103.96 = 72,979.34/x
  3. Step 3: Cross multiply
    133,408.72x = 184,103.96 × 72,979.34
  4. Step 4: Simplify right side
    133,408.72x = 13,435,785,492.19
  5. Step 5: Solve for x
    x = 13,435,785,492.19/133,408.72
  6. Step 6: Final answer
    x = 100,711.45

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1.5x scale

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.