Home / 149,422.68-206,198.04-81,438.32

Finding the Fourth Proportional to 149,422.68, 206,198.04 and 81,438.32

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Solution

The fourth proportional to 149,422.68, 206,198.04 and 81,438.32 is: 112,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,422.68 : 206,198.04 = 81,438.32 : x
  2. Step 2: Convert to fraction form
    149,422.68/206,198.04 = 81,438.32/x
  3. Step 3: Cross multiply
    149,422.68x = 206,198.04 × 81,438.32
  4. Step 4: Simplify right side
    149,422.68x = 16,792,421,964.89
  5. Step 5: Solve for x
    x = 16,792,421,964.89/149,422.68
  6. Step 6: Final answer
    x = 112,382.02

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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.