Home / 189,231.49-284,044.07-139,367.89

Finding the Fourth Proportional to 189,231.49, 284,044.07 and 139,367.89

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Solution

The fourth proportional to 189,231.49, 284,044.07 and 139,367.89 is: 209,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,231.49 : 284,044.07 = 139,367.89 : x
  2. Step 2: Convert to fraction form
    189,231.49/284,044.07 = 139,367.89/x
  3. Step 3: Cross multiply
    189,231.49x = 284,044.07 × 139,367.89
  4. Step 4: Simplify right side
    189,231.49x = 39,586,622,702.91
  5. Step 5: Solve for x
    x = 39,586,622,702.91/189,231.49
  6. Step 6: Final answer
    x = 209,196.80

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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.