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Finding the Fourth Proportional to 103,975, 143,499.54 and 58,662.28

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Solution

The fourth proportional to 103,975, 143,499.54 and 58,662.28 is: 80,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,975 : 143,499.54 = 58,662.28 : x
  2. Step 2: Convert to fraction form
    103,975/143,499.54 = 58,662.28/x
  3. Step 3: Cross multiply
    103,975x = 143,499.54 × 58,662.28
  4. Step 4: Simplify right side
    103,975x = 8,418,010,195.35
  5. Step 5: Solve for x
    x = 8,418,010,195.35/103,975
  6. Step 6: Final answer
    x = 80,961.87

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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.