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Finding the Fourth Proportional to 111,480.60, 167,415.30 and 107,981.40

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Solution

The fourth proportional to 111,480.60, 167,415.30 and 107,981.40 is: 162,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,480.60 : 167,415.30 = 107,981.40 : x
  2. Step 2: Convert to fraction form
    111,480.60/167,415.30 = 107,981.40/x
  3. Step 3: Cross multiply
    111,480.60x = 167,415.30 × 107,981.40
  4. Step 4: Simplify right side
    111,480.60x = 18,077,738,475.42
  5. Step 5: Solve for x
    x = 18,077,738,475.42/111,480.60
  6. Step 6: Final answer
    x = 162,160.40

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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.