Home / 149,267.63-205,986.37-81,285.41

Finding the Fourth Proportional to 149,267.63, 205,986.37 and 81,285.41

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Solution

The fourth proportional to 149,267.63, 205,986.37 and 81,285.41 is: 112,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,267.63 : 205,986.37 = 81,285.41 : x
  2. Step 2: Convert to fraction form
    149,267.63/205,986.37 = 81,285.41/x
  3. Step 3: Cross multiply
    149,267.63x = 205,986.37 × 81,285.41
  4. Step 4: Simplify right side
    149,267.63x = 16,743,686,539.86
  5. Step 5: Solve for x
    x = 16,743,686,539.86/149,267.63
  6. Step 6: Final answer
    x = 112,172.25

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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.