Home / 113,451.36-156,611.28-80,766.84

Finding the Fourth Proportional to 113,451.36, 156,611.28 and 80,766.84

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Solution

The fourth proportional to 113,451.36, 156,611.28 and 80,766.84 is: 111,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,451.36 : 156,611.28 = 80,766.84 : x
  2. Step 2: Convert to fraction form
    113,451.36/156,611.28 = 80,766.84/x
  3. Step 3: Cross multiply
    113,451.36x = 156,611.28 × 80,766.84
  4. Step 4: Simplify right side
    113,451.36x = 12,648,998,193.96
  5. Step 5: Solve for x
    x = 12,648,998,193.96/113,451.36
  6. Step 6: Final answer
    x = 111,492.70

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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.