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Finding the Fourth Proportional to 128,350.32, 192,558.32 and 49,443.36

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Solution

The fourth proportional to 128,350.32, 192,558.32 and 49,443.36 is: 74,177.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,350.32 : 192,558.32 = 49,443.36 : x
  2. Step 2: Convert to fraction form
    128,350.32/192,558.32 = 49,443.36/x
  3. Step 3: Cross multiply
    128,350.32x = 192,558.32 × 49,443.36
  4. Step 4: Simplify right side
    128,350.32x = 9,520,730,336.76
  5. Step 5: Solve for x
    x = 9,520,730,336.76/128,350.32
  6. Step 6: Final answer
    x = 74,177.69

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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.