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Finding the Fourth Proportional to 150,170.60, 207,258.69 and 85,639.97

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Solution

The fourth proportional to 150,170.60, 207,258.69 and 85,639.97 is: 118,196.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,170.60 : 207,258.69 = 85,639.97 : x
  2. Step 2: Convert to fraction form
    150,170.60/207,258.69 = 85,639.97/x
  3. Step 3: Cross multiply
    150,170.60x = 207,258.69 × 85,639.97
  4. Step 4: Simplify right side
    150,170.60x = 17,749,626,957.55
  5. Step 5: Solve for x
    x = 17,749,626,957.55/150,170.60
  6. Step 6: Final answer
    x = 118,196.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.