Home / 149,280.90-206,000.73-81,297.60

Finding the Fourth Proportional to 149,280.90, 206,000.73 and 81,297.60

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Solution

The fourth proportional to 149,280.90, 206,000.73 and 81,297.60 is: 112,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,280.90 : 206,000.73 = 81,297.60 : x
  2. Step 2: Convert to fraction form
    149,280.90/206,000.73 = 81,297.60/x
  3. Step 3: Cross multiply
    149,280.90x = 206,000.73 × 81,297.60
  4. Step 4: Simplify right side
    149,280.90x = 16,747,364,947.25
  5. Step 5: Solve for x
    x = 16,747,364,947.25/149,280.90
  6. Step 6: Final answer
    x = 112,186.92

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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.