Home / 111,821.21-167,809.58-72,280.25

Finding the Fourth Proportional to 111,821.21, 167,809.58 and 72,280.25

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Solution

The fourth proportional to 111,821.21, 167,809.58 and 72,280.25 is: 108,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,821.21 : 167,809.58 = 72,280.25 : x
  2. Step 2: Convert to fraction form
    111,821.21/167,809.58 = 72,280.25/x
  3. Step 3: Cross multiply
    111,821.21x = 167,809.58 × 72,280.25
  4. Step 4: Simplify right side
    111,821.21x = 12,129,318,033.39
  5. Step 5: Solve for x
    x = 12,129,318,033.39/111,821.21
  6. Step 6: Final answer
    x = 108,470.64

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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.