Home / 128,260.63-192,416.46-39,510.35

Finding the Fourth Proportional to 128,260.63, 192,416.46 and 39,510.35

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Solution

The fourth proportional to 128,260.63, 192,416.46 and 39,510.35 is: 59,273.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.63 : 192,416.46 = 39,510.35 : x
  2. Step 2: Convert to fraction form
    128,260.63/192,416.46 = 39,510.35/x
  3. Step 3: Cross multiply
    128,260.63x = 192,416.46 × 39,510.35
  4. Step 4: Simplify right side
    128,260.63x = 7,602,440,520.73
  5. Step 5: Solve for x
    x = 7,602,440,520.73/128,260.63
  6. Step 6: Final answer
    x = 59,273.38

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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.