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Finding the Fourth Proportional to 172,560.66, 258,828.56 and 54,265.84

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Solution

The fourth proportional to 172,560.66, 258,828.56 and 54,265.84 is: 81,394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,560.66 : 258,828.56 = 54,265.84 : x
  2. Step 2: Convert to fraction form
    172,560.66/258,828.56 = 54,265.84/x
  3. Step 3: Cross multiply
    172,560.66x = 258,828.56 × 54,265.84
  4. Step 4: Simplify right side
    172,560.66x = 14,045,549,224.39
  5. Step 5: Solve for x
    x = 14,045,549,224.39/172,560.66
  6. Step 6: Final answer
    x = 81,394.85

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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.