Home / 111,944.20-167,916.30-78,701.80

Finding the Fourth Proportional to 111,944.20, 167,916.30 and 78,701.80

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Solution

The fourth proportional to 111,944.20, 167,916.30 and 78,701.80 is: 118,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,944.20 : 167,916.30 = 78,701.80 : x
  2. Step 2: Convert to fraction form
    111,944.20/167,916.30 = 78,701.80/x
  3. Step 3: Cross multiply
    111,944.20x = 167,916.30 × 78,701.80
  4. Step 4: Simplify right side
    111,944.20x = 13,215,315,059.34
  5. Step 5: Solve for x
    x = 13,215,315,059.34/111,944.20
  6. Step 6: Final answer
    x = 118,052.70

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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.