Home / 149,422.98-206,197.70-81,438.50

Finding the Fourth Proportional to 149,422.98, 206,197.70 and 81,438.50

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Solution

The fourth proportional to 149,422.98, 206,197.70 and 81,438.50 is: 112,381.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,422.98 : 206,197.70 = 81,438.50 : x
  2. Step 2: Convert to fraction form
    149,422.98/206,197.70 = 81,438.50/x
  3. Step 3: Cross multiply
    149,422.98x = 206,197.70 × 81,438.50
  4. Step 4: Simplify right side
    149,422.98x = 16,792,431,391.45
  5. Step 5: Solve for x
    x = 16,792,431,391.45/149,422.98
  6. Step 6: Final answer
    x = 112,381.85

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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.