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Finding the Fourth Proportional to 111,378.80, 167,068.20 and 100,103.60

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Solution

The fourth proportional to 111,378.80, 167,068.20 and 100,103.60 is: 150,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,378.80 : 167,068.20 = 100,103.60 : x
  2. Step 2: Convert to fraction form
    111,378.80/167,068.20 = 100,103.60/x
  3. Step 3: Cross multiply
    111,378.80x = 167,068.20 × 100,103.60
  4. Step 4: Simplify right side
    111,378.80x = 16,724,128,265.52
  5. Step 5: Solve for x
    x = 16,724,128,265.52/111,378.80
  6. Step 6: Final answer
    x = 150,155.40

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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.