Home / 172,420.82-237,905.06-100,786.98

Finding the Fourth Proportional to 172,420.82, 237,905.06 and 100,786.98

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Solution

The fourth proportional to 172,420.82, 237,905.06 and 100,786.98 is: 139,065.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,420.82 : 237,905.06 = 100,786.98 : x
  2. Step 2: Convert to fraction form
    172,420.82/237,905.06 = 100,786.98/x
  3. Step 3: Cross multiply
    172,420.82x = 237,905.06 × 100,786.98
  4. Step 4: Simplify right side
    172,420.82x = 23,977,732,020.18
  5. Step 5: Solve for x
    x = 23,977,732,020.18/172,420.82
  6. Step 6: Final answer
    x = 139,065.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.