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Finding the Fourth Proportional to 111,745, 154,208.10 and 67,047.40

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Solution

The fourth proportional to 111,745, 154,208.10 and 67,047.40 is: 92,525.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,745 : 154,208.10 = 67,047.40 : x
  2. Step 2: Convert to fraction form
    111,745/154,208.10 = 67,047.40/x
  3. Step 3: Cross multiply
    111,745x = 154,208.10 × 67,047.40
  4. Step 4: Simplify right side
    111,745x = 10,339,252,163.94
  5. Step 5: Solve for x
    x = 10,339,252,163.94/111,745
  6. Step 6: Final answer
    x = 92,525.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.