Home / 113,157.22-156,139.62-65,401.36

Finding the Fourth Proportional to 113,157.22, 156,139.62 and 65,401.36

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Solution

The fourth proportional to 113,157.22, 156,139.62 and 65,401.36 is: 90,243.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,157.22 : 156,139.62 = 65,401.36 : x
  2. Step 2: Convert to fraction form
    113,157.22/156,139.62 = 65,401.36/x
  3. Step 3: Cross multiply
    113,157.22x = 156,139.62 × 65,401.36
  4. Step 4: Simplify right side
    113,157.22x = 10,211,743,497.88
  5. Step 5: Solve for x
    x = 10,211,743,497.88/113,157.22
  6. Step 6: Final answer
    x = 90,243.85

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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.