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Finding the Fourth Proportional to 104,108.70, 143,668.29 and 56,361.66

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Solution

The fourth proportional to 104,108.70, 143,668.29 and 56,361.66 is: 77,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,108.70 : 143,668.29 = 56,361.66 : x
  2. Step 2: Convert to fraction form
    104,108.70/143,668.29 = 56,361.66/x
  3. Step 3: Cross multiply
    104,108.70x = 143,668.29 × 56,361.66
  4. Step 4: Simplify right side
    104,108.70x = 8,097,383,313.76
  5. Step 5: Solve for x
    x = 8,097,383,313.76/104,108.70
  6. Step 6: Final answer
    x = 77,778.16

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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.