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Finding the Fourth Proportional to 103,958.94, 143,463.12 and 58,636.78

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Solution

The fourth proportional to 103,958.94, 143,463.12 and 58,636.78 is: 80,918.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,958.94 : 143,463.12 = 58,636.78 : x
  2. Step 2: Convert to fraction form
    103,958.94/143,463.12 = 58,636.78/x
  3. Step 3: Cross multiply
    103,958.94x = 143,463.12 × 58,636.78
  4. Step 4: Simplify right side
    103,958.94x = 8,412,215,405.55
  5. Step 5: Solve for x
    x = 8,412,215,405.55/103,958.94
  6. Step 6: Final answer
    x = 80,918.63

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1.5x scale

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.