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Finding the Fourth Proportional to 172,364.40, 258,554.70 and 54,039.60

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Solution

The fourth proportional to 172,364.40, 258,554.70 and 54,039.60 is: 81,061.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,364.40 : 258,554.70 = 54,039.60 : x
  2. Step 2: Convert to fraction form
    172,364.40/258,554.70 = 54,039.60/x
  3. Step 3: Cross multiply
    172,364.40x = 258,554.70 × 54,039.60
  4. Step 4: Simplify right side
    172,364.40x = 13,972,192,566.12
  5. Step 5: Solve for x
    x = 13,972,192,566.12/172,364.40
  6. Step 6: Final answer
    x = 81,061.94

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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.