Home / 189,728.41-261,830.19-103,691.02

Finding the Fourth Proportional to 189,728.41, 261,830.19 and 103,691.02

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Solution

The fourth proportional to 189,728.41, 261,830.19 and 103,691.02 is: 143,096.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,728.41 : 261,830.19 = 103,691.02 : x
  2. Step 2: Convert to fraction form
    189,728.41/261,830.19 = 103,691.02/x
  3. Step 3: Cross multiply
    189,728.41x = 261,830.19 × 103,691.02
  4. Step 4: Simplify right side
    189,728.41x = 27,149,439,467.89
  5. Step 5: Solve for x
    x = 27,149,439,467.89/189,728.41
  6. Step 6: Final answer
    x = 143,096.33

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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.