Home / 105,239.18-157,859.31-30,359.75

Finding the Fourth Proportional to 105,239.18, 157,859.31 and 30,359.75

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Solution

The fourth proportional to 105,239.18, 157,859.31 and 30,359.75 is: 45,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,239.18 : 157,859.31 = 30,359.75 : x
  2. Step 2: Convert to fraction form
    105,239.18/157,859.31 = 30,359.75/x
  3. Step 3: Cross multiply
    105,239.18x = 157,859.31 × 30,359.75
  4. Step 4: Simplify right side
    105,239.18x = 4,792,568,397.48
  5. Step 5: Solve for x
    x = 4,792,568,397.48/105,239.18
  6. Step 6: Final answer
    x = 45,539.78

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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.