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Finding the Fourth Proportional to 112,461.40, 168,692.10 and 80,968.60

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Solution

The fourth proportional to 112,461.40, 168,692.10 and 80,968.60 is: 121,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,461.40 : 168,692.10 = 80,968.60 : x
  2. Step 2: Convert to fraction form
    112,461.40/168,692.10 = 80,968.60/x
  3. Step 3: Cross multiply
    112,461.40x = 168,692.10 × 80,968.60
  4. Step 4: Simplify right side
    112,461.40x = 13,658,763,168.06
  5. Step 5: Solve for x
    x = 13,658,763,168.06/112,461.40
  6. Step 6: Final answer
    x = 121,452.90

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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.