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Finding the Fourth Proportional to 98,546.20, 147,649.20 and 45,847.60

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Solution

The fourth proportional to 98,546.20, 147,649.20 and 45,847.60 is: 68,692.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,546.20 : 147,649.20 = 45,847.60 : x
  2. Step 2: Convert to fraction form
    98,546.20/147,649.20 = 45,847.60/x
  3. Step 3: Cross multiply
    98,546.20x = 147,649.20 × 45,847.60
  4. Step 4: Simplify right side
    98,546.20x = 6,769,361,461.92
  5. Step 5: Solve for x
    x = 6,769,361,461.92/98,546.20
  6. Step 6: Final answer
    x = 68,692.26

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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.