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Finding the Fourth Proportional to 128,299.04, 192,392.86 and 49,357.86

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Solution

The fourth proportional to 128,299.04, 192,392.86 and 49,357.86 is: 74,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,299.04 : 192,392.86 = 49,357.86 : x
  2. Step 2: Convert to fraction form
    128,299.04/192,392.86 = 49,357.86/x
  3. Step 3: Cross multiply
    128,299.04x = 192,392.86 × 49,357.86
  4. Step 4: Simplify right side
    128,299.04x = 9,496,099,848.88
  5. Step 5: Solve for x
    x = 9,496,099,848.88/128,299.04
  6. Step 6: Final answer
    x = 74,015.36

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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.