Home / 142,014.20-195,989.10-81,604.40

Finding the Fourth Proportional to 142,014.20, 195,989.10 and 81,604.40

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Solution

The fourth proportional to 142,014.20, 195,989.10 and 81,604.40 is: 112,619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,014.20 : 195,989.10 = 81,604.40 : x
  2. Step 2: Convert to fraction form
    142,014.20/195,989.10 = 81,604.40/x
  3. Step 3: Cross multiply
    142,014.20x = 195,989.10 × 81,604.40
  4. Step 4: Simplify right side
    142,014.20x = 15,993,572,912.04
  5. Step 5: Solve for x
    x = 15,993,572,912.04/142,014.20
  6. Step 6: Final answer
    x = 112,619.53

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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.