Home / 129,315.78-193,973.70-40,576.20

Finding the Fourth Proportional to 129,315.78, 193,973.70 and 40,576.20

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Solution

The fourth proportional to 129,315.78, 193,973.70 and 40,576.20 is: 60,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,315.78 : 193,973.70 = 40,576.20 : x
  2. Step 2: Convert to fraction form
    129,315.78/193,973.70 = 40,576.20/x
  3. Step 3: Cross multiply
    129,315.78x = 193,973.70 × 40,576.20
  4. Step 4: Simplify right side
    129,315.78x = 7,870,715,645.94
  5. Step 5: Solve for x
    x = 7,870,715,645.94/129,315.78
  6. Step 6: Final answer
    x = 60,864.31

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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.