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Finding the Fourth Proportional to 172,673.21, 259,037.49 and 72,848.11

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Solution

The fourth proportional to 172,673.21, 259,037.49 and 72,848.11 is: 109,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,673.21 : 259,037.49 = 72,848.11 : x
  2. Step 2: Convert to fraction form
    172,673.21/259,037.49 = 72,848.11/x
  3. Step 3: Cross multiply
    172,673.21x = 259,037.49 × 72,848.11
  4. Step 4: Simplify right side
    172,673.21x = 18,870,390,270.46
  5. Step 5: Solve for x
    x = 18,870,390,270.46/172,673.21
  6. Step 6: Final answer
    x = 109,283.84

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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.