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Finding the Fourth Proportional to 82,123.20, 114,739.20 and 82,123.20

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Solution

The fourth proportional to 82,123.20, 114,739.20 and 82,123.20 is: 114,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,123.20 : 114,739.20 = 82,123.20 : x
  2. Step 2: Convert to fraction form
    82,123.20/114,739.20 = 82,123.20/x
  3. Step 3: Cross multiply
    82,123.20x = 114,739.20 × 82,123.20
  4. Step 4: Simplify right side
    82,123.20x = 9,422,750,269.44
  5. Step 5: Solve for x
    x = 9,422,750,269.44/82,123.20
  6. Step 6: Final answer
    x = 114,739.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.