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Finding the Fourth Proportional to 80,116.80, 120,175.20 and 61,454.40

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Solution

The fourth proportional to 80,116.80, 120,175.20 and 61,454.40 is: 92,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,116.80 : 120,175.20 = 61,454.40 : x
  2. Step 2: Convert to fraction form
    80,116.80/120,175.20 = 61,454.40/x
  3. Step 3: Cross multiply
    80,116.80x = 120,175.20 × 61,454.40
  4. Step 4: Simplify right side
    80,116.80x = 7,385,294,810.88
  5. Step 5: Solve for x
    x = 7,385,294,810.88/80,116.80
  6. Step 6: Final answer
    x = 92,181.60

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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.