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Finding the Fourth Proportional to 275,671.08, 413,564.00 and 86,123.79

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Solution

The fourth proportional to 275,671.08, 413,564.00 and 86,123.79 is: 129,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,671.08 : 413,564.00 = 86,123.79 : x
  2. Step 2: Convert to fraction form
    275,671.08/413,564.00 = 86,123.79/x
  3. Step 3: Cross multiply
    275,671.08x = 413,564.00 × 86,123.79
  4. Step 4: Simplify right side
    275,671.08x = 35,617,698,656.94
  5. Step 5: Solve for x
    x = 35,617,698,656.94/275,671.08
  6. Step 6: Final answer
    x = 129,203.61

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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.