Home / 105,181.05-145,161.27-64,893.78

Finding the Fourth Proportional to 105,181.05, 145,161.27 and 64,893.78

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Solution

The fourth proportional to 105,181.05, 145,161.27 and 64,893.78 is: 89,560.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,181.05 : 145,161.27 = 64,893.78 : x
  2. Step 2: Convert to fraction form
    105,181.05/145,161.27 = 64,893.78/x
  3. Step 3: Cross multiply
    105,181.05x = 145,161.27 × 64,893.78
  4. Step 4: Simplify right side
    105,181.05x = 9,420,063,519.90
  5. Step 5: Solve for x
    x = 9,420,063,519.90/105,181.05
  6. Step 6: Final answer
    x = 89,560.46

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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.