Home / 129,930.08-194,913.56-39,980.25

Finding the Fourth Proportional to 129,930.08, 194,913.56 and 39,980.25

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Solution

The fourth proportional to 129,930.08, 194,913.56 and 39,980.25 is: 59,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,930.08 : 194,913.56 = 39,980.25 : x
  2. Step 2: Convert to fraction form
    129,930.08/194,913.56 = 39,980.25/x
  3. Step 3: Cross multiply
    129,930.08x = 194,913.56 × 39,980.25
  4. Step 4: Simplify right side
    129,930.08x = 7,792,692,957.14
  5. Step 5: Solve for x
    x = 7,792,692,957.14/129,930.08
  6. Step 6: Final answer
    x = 59,976.05

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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.