Home / 128,068.85-192,111.46-53,195.09

Finding the Fourth Proportional to 128,068.85, 192,111.46 and 53,195.09

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Solution

The fourth proportional to 128,068.85, 192,111.46 and 53,195.09 is: 79,796.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,068.85 : 192,111.46 = 53,195.09 : x
  2. Step 2: Convert to fraction form
    128,068.85/192,111.46 = 53,195.09/x
  3. Step 3: Cross multiply
    128,068.85x = 192,111.46 × 53,195.09
  4. Step 4: Simplify right side
    128,068.85x = 10,219,385,311.19
  5. Step 5: Solve for x
    x = 10,219,385,311.19/128,068.85
  6. Step 6: Final answer
    x = 79,796.02

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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.