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Finding the Fourth Proportional to 123,021.10, 184,531.65 and 112,134.70

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Solution

The fourth proportional to 123,021.10, 184,531.65 and 112,134.70 is: 168,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,021.10 : 184,531.65 = 112,134.70 : x
  2. Step 2: Convert to fraction form
    123,021.10/184,531.65 = 112,134.70/x
  3. Step 3: Cross multiply
    123,021.10x = 184,531.65 × 112,134.70
  4. Step 4: Simplify right side
    123,021.10x = 20,692,401,213.26
  5. Step 5: Solve for x
    x = 20,692,401,213.26/123,021.10
  6. Step 6: Final answer
    x = 168,202.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.