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Finding the Fourth Proportional to 133,720.89, 184,555.16 and 85,343.69

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Solution

The fourth proportional to 133,720.89, 184,555.16 and 85,343.69 is: 117,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,720.89 : 184,555.16 = 85,343.69 : x
  2. Step 2: Convert to fraction form
    133,720.89/184,555.16 = 85,343.69/x
  3. Step 3: Cross multiply
    133,720.89x = 184,555.16 × 85,343.69
  4. Step 4: Simplify right side
    133,720.89x = 15,750,617,936.22
  5. Step 5: Solve for x
    x = 15,750,617,936.22/133,720.89
  6. Step 6: Final answer
    x = 117,787.27

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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.