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Finding the Fourth Proportional to 133,720.72, 184,554.91 and 85,343.52

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Solution

The fourth proportional to 133,720.72, 184,554.91 and 85,343.52 is: 117,787.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,720.72 : 184,554.91 = 85,343.52 : x
  2. Step 2: Convert to fraction form
    133,720.72/184,554.91 = 85,343.52/x
  3. Step 3: Cross multiply
    133,720.72x = 184,554.91 × 85,343.52
  4. Step 4: Simplify right side
    133,720.72x = 15,750,565,653.35
  5. Step 5: Solve for x
    x = 15,750,565,653.35/133,720.72
  6. Step 6: Final answer
    x = 117,787.03

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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.