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Finding the Fourth Proportional to 189,958.75, 262,147.71 and 103,925.86

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Solution

The fourth proportional to 189,958.75, 262,147.71 and 103,925.86 is: 143,420.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,958.75 : 262,147.71 = 103,925.86 : x
  2. Step 2: Convert to fraction form
    189,958.75/262,147.71 = 103,925.86/x
  3. Step 3: Cross multiply
    189,958.75x = 262,147.71 × 103,925.86
  4. Step 4: Simplify right side
    189,958.75x = 27,243,926,208.78
  5. Step 5: Solve for x
    x = 27,243,926,208.78/189,958.75
  6. Step 6: Final answer
    x = 143,420.22

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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.