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Finding the Fourth Proportional to 128,083.96, 191,994.68 and 53,247.52

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Solution

The fourth proportional to 128,083.96, 191,994.68 and 53,247.52 is: 79,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,083.96 : 191,994.68 = 53,247.52 : x
  2. Step 2: Convert to fraction form
    128,083.96/191,994.68 = 53,247.52/x
  3. Step 3: Cross multiply
    128,083.96x = 191,994.68 × 53,247.52
  4. Step 4: Simplify right side
    128,083.96x = 10,223,240,296.96
  5. Step 5: Solve for x
    x = 10,223,240,296.96/128,083.96
  6. Step 6: Final answer
    x = 79,816.71

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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.