Home / 129,957.20-194,935.80-67,619.60

Finding the Fourth Proportional to 129,957.20, 194,935.80 and 67,619.60

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Solution

The fourth proportional to 129,957.20, 194,935.80 and 67,619.60 is: 101,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,957.20 : 194,935.80 = 67,619.60 : x
  2. Step 2: Convert to fraction form
    129,957.20/194,935.80 = 67,619.60/x
  3. Step 3: Cross multiply
    129,957.20x = 194,935.80 × 67,619.60
  4. Step 4: Simplify right side
    129,957.20x = 13,181,480,821.68
  5. Step 5: Solve for x
    x = 13,181,480,821.68/129,957.20
  6. Step 6: Final answer
    x = 101,429.40

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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.