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Finding the Fourth Proportional to 133,813, 184,656.36 and 80,128

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Solution

The fourth proportional to 133,813, 184,656.36 and 80,128 is: 110,573.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,813 : 184,656.36 = 80,128 : x
  2. Step 2: Convert to fraction form
    133,813/184,656.36 = 80,128/x
  3. Step 3: Cross multiply
    133,813x = 184,656.36 × 80,128
  4. Step 4: Simplify right side
    133,813x = 14,796,144,814.08
  5. Step 5: Solve for x
    x = 14,796,144,814.08/133,813
  6. Step 6: Final answer
    x = 110,573.30

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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.