Home / 149,266.63-205,985.00-81,284.41

Finding the Fourth Proportional to 149,266.63, 205,985.00 and 81,284.41

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Solution

The fourth proportional to 149,266.63, 205,985.00 and 81,284.41 is: 112,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,266.63 : 205,985.00 = 81,284.41 : x
  2. Step 2: Convert to fraction form
    149,266.63/205,985.00 = 81,284.41/x
  3. Step 3: Cross multiply
    149,266.63x = 205,985.00 × 81,284.41
  4. Step 4: Simplify right side
    149,266.63x = 16,743,367,757.50
  5. Step 5: Solve for x
    x = 16,743,367,757.50/149,266.63
  6. Step 6: Final answer
    x = 112,170.87

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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.