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Finding the Fourth Proportional to 111,978.15, 167,967.23 and 111,200.55

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Solution

The fourth proportional to 111,978.15, 167,967.23 and 111,200.55 is: 166,800.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,978.15 : 167,967.23 = 111,200.55 : x
  2. Step 2: Convert to fraction form
    111,978.15/167,967.23 = 111,200.55/x
  3. Step 3: Cross multiply
    111,978.15x = 167,967.23 × 111,200.55
  4. Step 4: Simplify right side
    111,978.15x = 18,678,047,801.97
  5. Step 5: Solve for x
    x = 18,678,047,801.97/111,978.15
  6. Step 6: Final answer
    x = 166,800.83

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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.