Home / 128,285.32-192,348.02-49,381.09

Finding the Fourth Proportional to 128,285.32, 192,348.02 and 49,381.09

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Solution

The fourth proportional to 128,285.32, 192,348.02 and 49,381.09 is: 74,040.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,285.32 : 192,348.02 = 49,381.09 : x
  2. Step 2: Convert to fraction form
    128,285.32/192,348.02 = 49,381.09/x
  3. Step 3: Cross multiply
    128,285.32x = 192,348.02 × 49,381.09
  4. Step 4: Simplify right side
    128,285.32x = 9,498,355,333.71
  5. Step 5: Solve for x
    x = 9,498,355,333.71/128,285.32
  6. Step 6: Final answer
    x = 74,040.86

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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.