Home / 123,800.20-170,844.99-72,815.09

Finding the Fourth Proportional to 123,800.20, 170,844.99 and 72,815.09

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Solution

The fourth proportional to 123,800.20, 170,844.99 and 72,815.09 is: 100,485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,800.20 : 170,844.99 = 72,815.09 : x
  2. Step 2: Convert to fraction form
    123,800.20/170,844.99 = 72,815.09/x
  3. Step 3: Cross multiply
    123,800.20x = 170,844.99 × 72,815.09
  4. Step 4: Simplify right side
    123,800.20x = 12,440,093,382.40
  5. Step 5: Solve for x
    x = 12,440,093,382.40/123,800.20
  6. Step 6: Final answer
    x = 100,485.24

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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.