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Finding the Fourth Proportional to 172,561.66, 258,830.06 and 54,266.84

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Solution

The fourth proportional to 172,561.66, 258,830.06 and 54,266.84 is: 81,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,561.66 : 258,830.06 = 54,266.84 : x
  2. Step 2: Convert to fraction form
    172,561.66/258,830.06 = 54,266.84/x
  3. Step 3: Cross multiply
    172,561.66x = 258,830.06 × 54,266.84
  4. Step 4: Simplify right side
    172,561.66x = 14,045,889,453.21
  5. Step 5: Solve for x
    x = 14,045,889,453.21/172,561.66
  6. Step 6: Final answer
    x = 81,396.35

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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.