Home / 111,821.80-167,732.70-90,826.60

Finding the Fourth Proportional to 111,821.80, 167,732.70 and 90,826.60

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Solution

The fourth proportional to 111,821.80, 167,732.70 and 90,826.60 is: 136,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,821.80 : 167,732.70 = 90,826.60 : x
  2. Step 2: Convert to fraction form
    111,821.80/167,732.70 = 90,826.60/x
  3. Step 3: Cross multiply
    111,821.80x = 167,732.70 × 90,826.60
  4. Step 4: Simplify right side
    111,821.80x = 15,234,590,849.82
  5. Step 5: Solve for x
    x = 15,234,590,849.82/111,821.80
  6. Step 6: Final answer
    x = 136,239.90

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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.