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Finding the Fourth Proportional to 111,352.80, 167,028.12 and 28,246.80

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Solution

The fourth proportional to 111,352.80, 167,028.12 and 28,246.80 is: 42,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.80 : 167,028.12 = 28,246.80 : x
  2. Step 2: Convert to fraction form
    111,352.80/167,028.12 = 28,246.80/x
  3. Step 3: Cross multiply
    111,352.80x = 167,028.12 × 28,246.80
  4. Step 4: Simplify right side
    111,352.80x = 4,718,009,900.02
  5. Step 5: Solve for x
    x = 4,718,009,900.02/111,352.80
  6. Step 6: Final answer
    x = 42,369.93

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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.