Home / 76,147.20-114,220.80-67,982.40

Finding the Fourth Proportional to 76,147.20, 114,220.80 and 67,982.40

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Solution

The fourth proportional to 76,147.20, 114,220.80 and 67,982.40 is: 101,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,147.20 : 114,220.80 = 67,982.40 : x
  2. Step 2: Convert to fraction form
    76,147.20/114,220.80 = 67,982.40/x
  3. Step 3: Cross multiply
    76,147.20x = 114,220.80 × 67,982.40
  4. Step 4: Simplify right side
    76,147.20x = 7,765,004,113.92
  5. Step 5: Solve for x
    x = 7,765,004,113.92/76,147.20
  6. Step 6: Final answer
    x = 101,973.60

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1.5x scale

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.