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Finding the Fourth Proportional to 104,062.52, 143,668.14 and 68,315.06

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Solution

The fourth proportional to 104,062.52, 143,668.14 and 68,315.06 is: 94,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,062.52 : 143,668.14 = 68,315.06 : x
  2. Step 2: Convert to fraction form
    104,062.52/143,668.14 = 68,315.06/x
  3. Step 3: Cross multiply
    104,062.52x = 143,668.14 × 68,315.06
  4. Step 4: Simplify right side
    104,062.52x = 9,814,697,604.19
  5. Step 5: Solve for x
    x = 9,814,697,604.19/104,062.52
  6. Step 6: Final answer
    x = 94,315.39

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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.