Home / 149,361.28-206,120.94-81,381.46

Finding the Fourth Proportional to 149,361.28, 206,120.94 and 81,381.46

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Solution

The fourth proportional to 149,361.28, 206,120.94 and 81,381.46 is: 112,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,361.28 : 206,120.94 = 81,381.46 : x
  2. Step 2: Convert to fraction form
    149,361.28/206,120.94 = 81,381.46/x
  3. Step 3: Cross multiply
    149,361.28x = 206,120.94 × 81,381.46
  4. Step 4: Simplify right side
    149,361.28x = 16,774,423,033.77
  5. Step 5: Solve for x
    x = 16,774,423,033.77/149,361.28
  6. Step 6: Final answer
    x = 112,307.71

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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.