Home / 128,400.03-192,495.69-53,575.97

Finding the Fourth Proportional to 128,400.03, 192,495.69 and 53,575.97

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Solution

The fourth proportional to 128,400.03, 192,495.69 and 53,575.97 is: 80,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,400.03 : 192,495.69 = 53,575.97 : x
  2. Step 2: Convert to fraction form
    128,400.03/192,495.69 = 53,575.97/x
  3. Step 3: Cross multiply
    128,400.03x = 192,495.69 × 53,575.97
  4. Step 4: Simplify right side
    128,400.03x = 10,313,142,350.09
  5. Step 5: Solve for x
    x = 10,313,142,350.09/128,400.03
  6. Step 6: Final answer
    x = 80,320.40

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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.