Home / 142,589.70-196,778.43-82,155.60

Finding the Fourth Proportional to 142,589.70, 196,778.43 and 82,155.60

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Solution

The fourth proportional to 142,589.70, 196,778.43 and 82,155.60 is: 113,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,589.70 : 196,778.43 = 82,155.60 : x
  2. Step 2: Convert to fraction form
    142,589.70/196,778.43 = 82,155.60/x
  3. Step 3: Cross multiply
    142,589.70x = 196,778.43 × 82,155.60
  4. Step 4: Simplify right side
    142,589.70x = 16,166,449,983.71
  5. Step 5: Solve for x
    x = 16,166,449,983.71/142,589.70
  6. Step 6: Final answer
    x = 113,377.40

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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.