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Finding the Fourth Proportional to 149,257.88, 205,625.46 and 103,857.90

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Solution

The fourth proportional to 149,257.88, 205,625.46 and 103,857.90 is: 143,080.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,257.88 : 205,625.46 = 103,857.90 : x
  2. Step 2: Convert to fraction form
    149,257.88/205,625.46 = 103,857.90/x
  3. Step 3: Cross multiply
    149,257.88x = 205,625.46 × 103,857.90
  4. Step 4: Simplify right side
    149,257.88x = 21,355,828,462.13
  5. Step 5: Solve for x
    x = 21,355,828,462.13/149,257.88
  6. Step 6: Final answer
    x = 143,080.07

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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.