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Finding the Fourth Proportional to 104,401.85, 144,136.42 and 68,653.51

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Solution

The fourth proportional to 104,401.85, 144,136.42 and 68,653.51 is: 94,782.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,401.85 : 144,136.42 = 68,653.51 : x
  2. Step 2: Convert to fraction form
    104,401.85/144,136.42 = 68,653.51/x
  3. Step 3: Cross multiply
    104,401.85x = 144,136.42 × 68,653.51
  4. Step 4: Simplify right side
    104,401.85x = 9,895,470,619.86
  5. Step 5: Solve for x
    x = 9,895,470,619.86/104,401.85
  6. Step 6: Final answer
    x = 94,782.53

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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.