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Finding the Fourth Proportional to 123,431.00, 184,830.26 and 85,427.63

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Solution

The fourth proportional to 123,431.00, 184,830.26 and 85,427.63 is: 127,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,431.00 : 184,830.26 = 85,427.63 : x
  2. Step 2: Convert to fraction form
    123,431.00/184,830.26 = 85,427.63/x
  3. Step 3: Cross multiply
    123,431.00x = 184,830.26 × 85,427.63
  4. Step 4: Simplify right side
    123,431.00x = 15,789,610,353.50
  5. Step 5: Solve for x
    x = 15,789,610,353.50/123,431.00
  6. Step 6: Final answer
    x = 127,922.56

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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.