Home / 189,221.49-284,029.07-139,357.89

Finding the Fourth Proportional to 189,221.49, 284,029.07 and 139,357.89

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Solution

The fourth proportional to 189,221.49, 284,029.07 and 139,357.89 is: 209,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,221.49 : 284,029.07 = 139,357.89 : x
  2. Step 2: Convert to fraction form
    189,221.49/284,029.07 = 139,357.89/x
  3. Step 3: Cross multiply
    189,221.49x = 284,029.07 × 139,357.89
  4. Step 4: Simplify right side
    189,221.49x = 39,581,691,197.07
  5. Step 5: Solve for x
    x = 39,581,691,197.07/189,221.49
  6. Step 6: Final answer
    x = 209,181.80

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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.