Home / 82,243.40-123,365.10-81,465.80

Finding the Fourth Proportional to 82,243.40, 123,365.10 and 81,465.80

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Solution

The fourth proportional to 82,243.40, 123,365.10 and 81,465.80 is: 122,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,243.40 : 123,365.10 = 81,465.80 : x
  2. Step 2: Convert to fraction form
    82,243.40/123,365.10 = 81,465.80/x
  3. Step 3: Cross multiply
    82,243.40x = 123,365.10 × 81,465.80
  4. Step 4: Simplify right side
    82,243.40x = 10,050,036,563.58
  5. Step 5: Solve for x
    x = 10,050,036,563.58/82,243.40
  6. Step 6: Final answer
    x = 122,198.70

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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.