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Finding the Fourth Proportional to 145,481.57, 200,734.46 and 85,040.52

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Solution

The fourth proportional to 145,481.57, 200,734.46 and 85,040.52 is: 117,338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,481.57 : 200,734.46 = 85,040.52 : x
  2. Step 2: Convert to fraction form
    145,481.57/200,734.46 = 85,040.52/x
  3. Step 3: Cross multiply
    145,481.57x = 200,734.46 × 85,040.52
  4. Step 4: Simplify right side
    145,481.57x = 17,070,562,435.12
  5. Step 5: Solve for x
    x = 17,070,562,435.12/145,481.57
  6. Step 6: Final answer
    x = 117,338.32

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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.