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Finding the Fourth Proportional to 170,892.20, 256,338.30 and 82,124.30

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Solution

The fourth proportional to 170,892.20, 256,338.30 and 82,124.30 is: 123,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,892.20 : 256,338.30 = 82,124.30 : x
  2. Step 2: Convert to fraction form
    170,892.20/256,338.30 = 82,124.30/x
  3. Step 3: Cross multiply
    170,892.20x = 256,338.30 × 82,124.30
  4. Step 4: Simplify right side
    170,892.20x = 21,051,603,450.69
  5. Step 5: Solve for x
    x = 21,051,603,450.69/170,892.20
  6. Step 6: Final answer
    x = 123,186.45

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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.