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Finding the Fourth Proportional to 128,348.32, 192,555.32 and 49,441.36

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Solution

The fourth proportional to 128,348.32, 192,555.32 and 49,441.36 is: 74,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,348.32 : 192,555.32 = 49,441.36 : x
  2. Step 2: Convert to fraction form
    128,348.32/192,555.32 = 49,441.36/x
  3. Step 3: Cross multiply
    128,348.32x = 192,555.32 × 49,441.36
  4. Step 4: Simplify right side
    128,348.32x = 9,520,196,896.04
  5. Step 5: Solve for x
    x = 9,520,196,896.04/128,348.32
  6. Step 6: Final answer
    x = 74,174.69

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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.