Home / 149,765.56-206,676.90-81,783.16

Finding the Fourth Proportional to 149,765.56, 206,676.90 and 81,783.16

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Solution

The fourth proportional to 149,765.56, 206,676.90 and 81,783.16 is: 112,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,765.56 : 206,676.90 = 81,783.16 : x
  2. Step 2: Convert to fraction form
    149,765.56/206,676.90 = 81,783.16/x
  3. Step 3: Cross multiply
    149,765.56x = 206,676.90 × 81,783.16
  4. Step 4: Simplify right side
    149,765.56x = 16,902,689,981.00
  5. Step 5: Solve for x
    x = 16,902,689,981.00/149,765.56
  6. Step 6: Final answer
    x = 112,860.99

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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.