Home / 97,440.40-146,218.20-71,078.80

Finding the Fourth Proportional to 97,440.40, 146,218.20 and 71,078.80

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Solution

The fourth proportional to 97,440.40, 146,218.20 and 71,078.80 is: 106,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,440.40 : 146,218.20 = 71,078.80 : x
  2. Step 2: Convert to fraction form
    97,440.40/146,218.20 = 71,078.80/x
  3. Step 3: Cross multiply
    97,440.40x = 146,218.20 × 71,078.80
  4. Step 4: Simplify right side
    97,440.40x = 10,393,014,194.16
  5. Step 5: Solve for x
    x = 10,393,014,194.16/97,440.40
  6. Step 6: Final answer
    x = 106,660.22

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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.