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Finding the Fourth Proportional to 125,679.87, 188,518.19 and 30,910.86

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Solution

The fourth proportional to 125,679.87, 188,518.19 and 30,910.86 is: 46,365.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,679.87 : 188,518.19 = 30,910.86 : x
  2. Step 2: Convert to fraction form
    125,679.87/188,518.19 = 30,910.86/x
  3. Step 3: Cross multiply
    125,679.87x = 188,518.19 × 30,910.86
  4. Step 4: Simplify right side
    125,679.87x = 5,827,259,223.99
  5. Step 5: Solve for x
    x = 5,827,259,223.99/125,679.87
  6. Step 6: Final answer
    x = 46,365.89

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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.