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Finding the Fourth Proportional to 128,339.83, 192,542.54 and 53,435.08

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Solution

The fourth proportional to 128,339.83, 192,542.54 and 53,435.08 is: 80,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.83 : 192,542.54 = 53,435.08 : x
  2. Step 2: Convert to fraction form
    128,339.83/192,542.54 = 53,435.08/x
  3. Step 3: Cross multiply
    128,339.83x = 192,542.54 × 53,435.08
  4. Step 4: Simplify right side
    128,339.83x = 10,288,526,028.30
  5. Step 5: Solve for x
    x = 10,288,526,028.30/128,339.83
  6. Step 6: Final answer
    x = 80,166.27

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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.