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Finding the Fourth Proportional to 98,107.80, 146,772.90 and 85,104.60

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Solution

The fourth proportional to 98,107.80, 146,772.90 and 85,104.60 is: 127,319.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,107.80 : 146,772.90 = 85,104.60 : x
  2. Step 2: Convert to fraction form
    98,107.80/146,772.90 = 85,104.60/x
  3. Step 3: Cross multiply
    98,107.80x = 146,772.90 × 85,104.60
  4. Step 4: Simplify right side
    98,107.80x = 12,491,048,945.34
  5. Step 5: Solve for x
    x = 12,491,048,945.34/98,107.80
  6. Step 6: Final answer
    x = 127,319.63

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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.