Home / 111,212.50-166,400.22-77,997.40

Finding the Fourth Proportional to 111,212.50, 166,400.22 and 77,997.40

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Solution

The fourth proportional to 111,212.50, 166,400.22 and 77,997.40 is: 116,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,212.50 : 166,400.22 = 77,997.40 : x
  2. Step 2: Convert to fraction form
    111,212.50/166,400.22 = 77,997.40/x
  3. Step 3: Cross multiply
    111,212.50x = 166,400.22 × 77,997.40
  4. Step 4: Simplify right side
    111,212.50x = 12,978,784,519.43
  5. Step 5: Solve for x
    x = 12,978,784,519.43/111,212.50
  6. Step 6: Final answer
    x = 116,702.57

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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.