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Finding the Fourth Proportional to 111,879.55, 167,819.79 and 45,320.94

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Solution

The fourth proportional to 111,879.55, 167,819.79 and 45,320.94 is: 67,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,879.55 : 167,819.79 = 45,320.94 : x
  2. Step 2: Convert to fraction form
    111,879.55/167,819.79 = 45,320.94/x
  3. Step 3: Cross multiply
    111,879.55x = 167,819.79 × 45,320.94
  4. Step 4: Simplify right side
    111,879.55x = 7,605,750,956.69
  5. Step 5: Solve for x
    x = 7,605,750,956.69/111,879.55
  6. Step 6: Final answer
    x = 67,981.60

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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.