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Finding the Fourth Proportional to 111,383.80, 167,075.70 and 100,108.60

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Solution

The fourth proportional to 111,383.80, 167,075.70 and 100,108.60 is: 150,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,383.80 : 167,075.70 = 100,108.60 : x
  2. Step 2: Convert to fraction form
    111,383.80/167,075.70 = 100,108.60/x
  3. Step 3: Cross multiply
    111,383.80x = 167,075.70 × 100,108.60
  4. Step 4: Simplify right side
    111,383.80x = 16,725,714,421.02
  5. Step 5: Solve for x
    x = 16,725,714,421.02/111,383.80
  6. Step 6: Final answer
    x = 150,162.90

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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.