Home / 203,823.80-281,078.88-158,421.68

Finding the Fourth Proportional to 203,823.80, 281,078.88 and 158,421.68

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Solution

The fourth proportional to 203,823.80, 281,078.88 and 158,421.68 is: 218,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,823.80 : 281,078.88 = 158,421.68 : x
  2. Step 2: Convert to fraction form
    203,823.80/281,078.88 = 158,421.68/x
  3. Step 3: Cross multiply
    203,823.80x = 281,078.88 × 158,421.68
  4. Step 4: Simplify right side
    203,823.80x = 44,528,988,382.12
  5. Step 5: Solve for x
    x = 44,528,988,382.12/203,823.80
  6. Step 6: Final answer
    x = 218,468.05

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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.