Home / 107,545.90-161,318.82-51,215.21

Finding the Fourth Proportional to 107,545.90, 161,318.82 and 51,215.21

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Solution

The fourth proportional to 107,545.90, 161,318.82 and 51,215.21 is: 76,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,545.90 : 161,318.82 = 51,215.21 : x
  2. Step 2: Convert to fraction form
    107,545.90/161,318.82 = 51,215.21/x
  3. Step 3: Cross multiply
    107,545.90x = 161,318.82 × 51,215.21
  4. Step 4: Simplify right side
    107,545.90x = 8,261,977,243.25
  5. Step 5: Solve for x
    x = 8,261,977,243.25/107,545.90
  6. Step 6: Final answer
    x = 76,822.80

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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.