Home / 97,940.80-146,738.40-80,315.20

Finding the Fourth Proportional to 97,940.80, 146,738.40 and 80,315.20

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Solution

The fourth proportional to 97,940.80, 146,738.40 and 80,315.20 is: 120,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,940.80 : 146,738.40 = 80,315.20 : x
  2. Step 2: Convert to fraction form
    97,940.80/146,738.40 = 80,315.20/x
  3. Step 3: Cross multiply
    97,940.80x = 146,738.40 × 80,315.20
  4. Step 4: Simplify right side
    97,940.80x = 11,785,323,943.68
  5. Step 5: Solve for x
    x = 11,785,323,943.68/97,940.80
  6. Step 6: Final answer
    x = 120,331.10

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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.