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Finding the Fourth Proportional to 123,028.30, 184,542.45 and 100,866.70

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Solution

The fourth proportional to 123,028.30, 184,542.45 and 100,866.70 is: 151,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,028.30 : 184,542.45 = 100,866.70 : x
  2. Step 2: Convert to fraction form
    123,028.30/184,542.45 = 100,866.70/x
  3. Step 3: Cross multiply
    123,028.30x = 184,542.45 × 100,866.70
  4. Step 4: Simplify right side
    123,028.30x = 18,614,187,941.42
  5. Step 5: Solve for x
    x = 18,614,187,941.42/123,028.30
  6. Step 6: Final answer
    x = 151,300.05

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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.