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Finding the Fourth Proportional to 161,133.71, 241,717.31 and 76,879.67

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Solution

The fourth proportional to 161,133.71, 241,717.31 and 76,879.67 is: 115,327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,133.71 : 241,717.31 = 76,879.67 : x
  2. Step 2: Convert to fraction form
    161,133.71/241,717.31 = 76,879.67/x
  3. Step 3: Cross multiply
    161,133.71x = 241,717.31 × 76,879.67
  4. Step 4: Simplify right side
    161,133.71x = 18,583,147,026.09
  5. Step 5: Solve for x
    x = 18,583,147,026.09/161,133.71
  6. Step 6: Final answer
    x = 115,327.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.