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Finding the Fourth Proportional to 103,947, 143,447.26 and 58,008.60

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Solution

The fourth proportional to 103,947, 143,447.26 and 58,008.60 is: 80,052.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,947 : 143,447.26 = 58,008.60 : x
  2. Step 2: Convert to fraction form
    103,947/143,447.26 = 58,008.60/x
  3. Step 3: Cross multiply
    103,947x = 143,447.26 × 58,008.60
  4. Step 4: Simplify right side
    103,947x = 8,321,174,726.44
  5. Step 5: Solve for x
    x = 8,321,174,726.44/103,947
  6. Step 6: Final answer
    x = 80,052.09

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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.