Home / 103,961.40-155,942.10-56,722.20

Finding the Fourth Proportional to 103,961.40, 155,942.10 and 56,722.20

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Solution

The fourth proportional to 103,961.40, 155,942.10 and 56,722.20 is: 85,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,961.40 : 155,942.10 = 56,722.20 : x
  2. Step 2: Convert to fraction form
    103,961.40/155,942.10 = 56,722.20/x
  3. Step 3: Cross multiply
    103,961.40x = 155,942.10 × 56,722.20
  4. Step 4: Simplify right side
    103,961.40x = 8,845,378,984.62
  5. Step 5: Solve for x
    x = 8,845,378,984.62/103,961.40
  6. Step 6: Final answer
    x = 85,083.30

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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.