Home / 149,012.46-205,636.05-81,029.48

Finding the Fourth Proportional to 149,012.46, 205,636.05 and 81,029.48

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Solution

The fourth proportional to 149,012.46, 205,636.05 and 81,029.48 is: 111,820.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,012.46 : 205,636.05 = 81,029.48 : x
  2. Step 2: Convert to fraction form
    149,012.46/205,636.05 = 81,029.48/x
  3. Step 3: Cross multiply
    149,012.46x = 205,636.05 × 81,029.48
  4. Step 4: Simplify right side
    149,012.46x = 16,662,581,172.57
  5. Step 5: Solve for x
    x = 16,662,581,172.57/149,012.46
  6. Step 6: Final answer
    x = 111,820.05

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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.