Home / 161,583.90-242,414.31-81,424.91

Finding the Fourth Proportional to 161,583.90, 242,414.31 and 81,424.91

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Solution

The fourth proportional to 161,583.90, 242,414.31 and 81,424.91 is: 122,156.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,583.90 : 242,414.31 = 81,424.91 : x
  2. Step 2: Convert to fraction form
    161,583.90/242,414.31 = 81,424.91/x
  3. Step 3: Cross multiply
    161,583.90x = 242,414.31 × 81,424.91
  4. Step 4: Simplify right side
    161,583.90x = 19,738,561,755.27
  5. Step 5: Solve for x
    x = 19,738,561,755.27/161,583.90
  6. Step 6: Final answer
    x = 122,156.74

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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.