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Finding the Fourth Proportional to 189,042.45, 260,884.49 and 108,484.71

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Solution

The fourth proportional to 189,042.45, 260,884.49 and 108,484.71 is: 149,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,042.45 : 260,884.49 = 108,484.71 : x
  2. Step 2: Convert to fraction form
    189,042.45/260,884.49 = 108,484.71/x
  3. Step 3: Cross multiply
    189,042.45x = 260,884.49 × 108,484.71
  4. Step 4: Simplify right side
    189,042.45x = 28,301,978,241.15
  5. Step 5: Solve for x
    x = 28,301,978,241.15/189,042.45
  6. Step 6: Final answer
    x = 149,712.29

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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.