Home / 128,184.12-192,239.82-53,211.60

Finding the Fourth Proportional to 128,184.12, 192,239.82 and 53,211.60

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Solution

The fourth proportional to 128,184.12, 192,239.82 and 53,211.60 is: 79,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,184.12 : 192,239.82 = 53,211.60 : x
  2. Step 2: Convert to fraction form
    128,184.12/192,239.82 = 53,211.60/x
  3. Step 3: Cross multiply
    128,184.12x = 192,239.82 × 53,211.60
  4. Step 4: Simplify right side
    128,184.12x = 10,229,388,405.91
  5. Step 5: Solve for x
    x = 10,229,388,405.91/128,184.12
  6. Step 6: Final answer
    x = 79,802.31

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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.