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Finding the Fourth Proportional to 123,012.60, 184,518.90 and 39,906.60

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Solution

The fourth proportional to 123,012.60, 184,518.90 and 39,906.60 is: 59,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,012.60 : 184,518.90 = 39,906.60 : x
  2. Step 2: Convert to fraction form
    123,012.60/184,518.90 = 39,906.60/x
  3. Step 3: Cross multiply
    123,012.60x = 184,518.90 × 39,906.60
  4. Step 4: Simplify right side
    123,012.60x = 7,363,521,934.74
  5. Step 5: Solve for x
    x = 7,363,521,934.74/123,012.60
  6. Step 6: Final answer
    x = 59,859.90

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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.