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Finding the Fourth Proportional to 172,551.51, 258,853.38 and 54,211.71

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Solution

The fourth proportional to 172,551.51, 258,853.38 and 54,211.71 is: 81,325.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,551.51 : 258,853.38 = 54,211.71 : x
  2. Step 2: Convert to fraction form
    172,551.51/258,853.38 = 54,211.71/x
  3. Step 3: Cross multiply
    172,551.51x = 258,853.38 × 54,211.71
  4. Step 4: Simplify right side
    172,551.51x = 14,032,884,369.08
  5. Step 5: Solve for x
    x = 14,032,884,369.08/172,551.51
  6. Step 6: Final answer
    x = 81,325.77

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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.