Home / 111,946.60-167,919.90-76,517.20

Finding the Fourth Proportional to 111,946.60, 167,919.90 and 76,517.20

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Solution

The fourth proportional to 111,946.60, 167,919.90 and 76,517.20 is: 114,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,946.60 : 167,919.90 = 76,517.20 : x
  2. Step 2: Convert to fraction form
    111,946.60/167,919.90 = 76,517.20/x
  3. Step 3: Cross multiply
    111,946.60x = 167,919.90 × 76,517.20
  4. Step 4: Simplify right side
    111,946.60x = 12,848,760,572.28
  5. Step 5: Solve for x
    x = 12,848,760,572.28/111,946.60
  6. Step 6: Final answer
    x = 114,775.80

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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.