Home / 128,440.70-192,689.74-61,936.76

Finding the Fourth Proportional to 128,440.70, 192,689.74 and 61,936.76

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Solution

The fourth proportional to 128,440.70, 192,689.74 and 61,936.76 is: 92,918.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,440.70 : 192,689.74 = 61,936.76 : x
  2. Step 2: Convert to fraction form
    128,440.70/192,689.74 = 61,936.76/x
  3. Step 3: Cross multiply
    128,440.70x = 192,689.74 × 61,936.76
  4. Step 4: Simplify right side
    128,440.70x = 11,934,578,180.84
  5. Step 5: Solve for x
    x = 11,934,578,180.84/128,440.70
  6. Step 6: Final answer
    x = 92,918.97

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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.