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Finding the Fourth Proportional to 172,435.92, 258,664.81 and 54,111.93

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Solution

The fourth proportional to 172,435.92, 258,664.81 and 54,111.93 is: 81,171.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,435.92 : 258,664.81 = 54,111.93 : x
  2. Step 2: Convert to fraction form
    172,435.92/258,664.81 = 54,111.93/x
  3. Step 3: Cross multiply
    172,435.92x = 258,664.81 × 54,111.93
  4. Step 4: Simplify right side
    172,435.92x = 13,996,852,092.18
  5. Step 5: Solve for x
    x = 13,996,852,092.18/172,435.92
  6. Step 6: Final answer
    x = 81,171.32

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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.