Home / 161,761.40-242,649.30-55,143.80

Finding the Fourth Proportional to 161,761.40, 242,649.30 and 55,143.80

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Solution

The fourth proportional to 161,761.40, 242,649.30 and 55,143.80 is: 82,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,761.40 : 242,649.30 = 55,143.80 : x
  2. Step 2: Convert to fraction form
    161,761.40/242,649.30 = 55,143.80/x
  3. Step 3: Cross multiply
    161,761.40x = 242,649.30 × 55,143.80
  4. Step 4: Simplify right side
    161,761.40x = 13,380,604,469.34
  5. Step 5: Solve for x
    x = 13,380,604,469.34/161,761.40
  6. Step 6: Final answer
    x = 82,718.15

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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.