Home / 149,198.90-205,987.50-103,860.36

Finding the Fourth Proportional to 149,198.90, 205,987.50 and 103,860.36

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Solution

The fourth proportional to 149,198.90, 205,987.50 and 103,860.36 is: 143,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,198.90 : 205,987.50 = 103,860.36 : x
  2. Step 2: Convert to fraction form
    149,198.90/205,987.50 = 103,860.36/x
  3. Step 3: Cross multiply
    149,198.90x = 205,987.50 × 103,860.36
  4. Step 4: Simplify right side
    149,198.90x = 21,393,935,905.50
  5. Step 5: Solve for x
    x = 21,393,935,905.50/149,198.90
  6. Step 6: Final answer
    x = 143,392.05

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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.