Home / 142,591.20-196,780.50-82,157.16

Finding the Fourth Proportional to 142,591.20, 196,780.50 and 82,157.16

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Solution

The fourth proportional to 142,591.20, 196,780.50 and 82,157.16 is: 113,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,591.20 : 196,780.50 = 82,157.16 : x
  2. Step 2: Convert to fraction form
    142,591.20/196,780.50 = 82,157.16/x
  3. Step 3: Cross multiply
    142,591.20x = 196,780.50 × 82,157.16
  4. Step 4: Simplify right side
    142,591.20x = 16,166,927,023.38
  5. Step 5: Solve for x
    x = 16,166,927,023.38/142,591.20
  6. Step 6: Final answer
    x = 113,379.56

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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.