Home / 129,971.10-194,628.60-85,356.30

Finding the Fourth Proportional to 129,971.10, 194,628.60 and 85,356.30

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Solution

The fourth proportional to 129,971.10, 194,628.60 and 85,356.30 is: 127,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,971.10 : 194,628.60 = 85,356.30 : x
  2. Step 2: Convert to fraction form
    129,971.10/194,628.60 = 85,356.30/x
  3. Step 3: Cross multiply
    129,971.10x = 194,628.60 × 85,356.30
  4. Step 4: Simplify right side
    129,971.10x = 16,612,777,170.18
  5. Step 5: Solve for x
    x = 16,612,777,170.18/129,971.10
  6. Step 6: Final answer
    x = 127,819.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.