Home / 189,644.09-284,507.70-71,315.39

Finding the Fourth Proportional to 189,644.09, 284,507.70 and 71,315.39

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Solution

The fourth proportional to 189,644.09, 284,507.70 and 71,315.39 is: 106,988.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,644.09 : 284,507.70 = 71,315.39 : x
  2. Step 2: Convert to fraction form
    189,644.09/284,507.70 = 71,315.39/x
  3. Step 3: Cross multiply
    189,644.09x = 284,507.70 × 71,315.39
  4. Step 4: Simplify right side
    189,644.09x = 20,289,776,160.96
  5. Step 5: Solve for x
    x = 20,289,776,160.96/189,644.09
  6. Step 6: Final answer
    x = 106,988.71

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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.