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Finding the Fourth Proportional to 128,535.94, 192,883.74 and 61,982.92

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Solution

The fourth proportional to 128,535.94, 192,883.74 and 61,982.92 is: 93,012.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535.94 : 192,883.74 = 61,982.92 : x
  2. Step 2: Convert to fraction form
    128,535.94/192,883.74 = 61,982.92/x
  3. Step 3: Cross multiply
    128,535.94x = 192,883.74 × 61,982.92
  4. Step 4: Simplify right side
    128,535.94x = 11,955,497,425.72
  5. Step 5: Solve for x
    x = 11,955,497,425.72/128,535.94
  6. Step 6: Final answer
    x = 93,012.88

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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.