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Finding the Fourth Proportional to 172,855.59, 259,283.39 and 54,538.89

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Solution

The fourth proportional to 172,855.59, 259,283.39 and 54,538.89 is: 81,808.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,855.59 : 259,283.39 = 54,538.89 : x
  2. Step 2: Convert to fraction form
    172,855.59/259,283.39 = 54,538.89/x
  3. Step 3: Cross multiply
    172,855.59x = 259,283.39 × 54,538.89
  4. Step 4: Simplify right side
    172,855.59x = 14,141,028,013.34
  5. Step 5: Solve for x
    x = 14,141,028,013.34/172,855.59
  6. Step 6: Final answer
    x = 81,808.34

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1.5x scale

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.