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Finding the Fourth Proportional to 100,447.73, 150,671.60 and 78,277.70

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Solution

The fourth proportional to 100,447.73, 150,671.60 and 78,277.70 is: 117,416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,447.73 : 150,671.60 = 78,277.70 : x
  2. Step 2: Convert to fraction form
    100,447.73/150,671.60 = 78,277.70/x
  3. Step 3: Cross multiply
    100,447.73x = 150,671.60 × 78,277.70
  4. Step 4: Simplify right side
    100,447.73x = 11,794,225,158.57
  5. Step 5: Solve for x
    x = 11,794,225,158.57/100,447.73
  6. Step 6: Final answer
    x = 117,416.55

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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.