Home / 128,666.72-192,993.90-35,172.68

Finding the Fourth Proportional to 128,666.72, 192,993.90 and 35,172.68

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Solution

The fourth proportional to 128,666.72, 192,993.90 and 35,172.68 is: 52,757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,666.72 : 192,993.90 = 35,172.68 : x
  2. Step 2: Convert to fraction form
    128,666.72/192,993.90 = 35,172.68/x
  3. Step 3: Cross multiply
    128,666.72x = 192,993.90 × 35,172.68
  4. Step 4: Simplify right side
    128,666.72x = 6,788,112,686.65
  5. Step 5: Solve for x
    x = 6,788,112,686.65/128,666.72
  6. Step 6: Final answer
    x = 52,757.33

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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.