Home / 145,561.28-200,872.24-81,899.04

Finding the Fourth Proportional to 145,561.28, 200,872.24 and 81,899.04

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Solution

The fourth proportional to 145,561.28, 200,872.24 and 81,899.04 is: 113,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,561.28 : 200,872.24 = 81,899.04 : x
  2. Step 2: Convert to fraction form
    145,561.28/200,872.24 = 81,899.04/x
  3. Step 3: Cross multiply
    145,561.28x = 200,872.24 × 81,899.04
  4. Step 4: Simplify right side
    145,561.28x = 16,451,243,618.65
  5. Step 5: Solve for x
    x = 16,451,243,618.65/145,561.28
  6. Step 6: Final answer
    x = 113,019.37

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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.