Home / 164,912.18-247,346.39-90,116.78

Finding the Fourth Proportional to 164,912.18, 247,346.39 and 90,116.78

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Solution

The fourth proportional to 164,912.18, 247,346.39 and 90,116.78 is: 135,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,912.18 : 247,346.39 = 90,116.78 : x
  2. Step 2: Convert to fraction form
    164,912.18/247,346.39 = 90,116.78/x
  3. Step 3: Cross multiply
    164,912.18x = 247,346.39 × 90,116.78
  4. Step 4: Simplify right side
    164,912.18x = 22,290,059,199.98
  5. Step 5: Solve for x
    x = 22,290,059,199.98/164,912.18
  6. Step 6: Final answer
    x = 135,163.21

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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.