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Finding the Fourth Proportional to 128,230.66, 192,321.83 and 34,724.10

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Solution

The fourth proportional to 128,230.66, 192,321.83 and 34,724.10 is: 52,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,230.66 : 192,321.83 = 34,724.10 : x
  2. Step 2: Convert to fraction form
    128,230.66/192,321.83 = 34,724.10/x
  3. Step 3: Cross multiply
    128,230.66x = 192,321.83 × 34,724.10
  4. Step 4: Simplify right side
    128,230.66x = 6,678,202,457.10
  5. Step 5: Solve for x
    x = 6,678,202,457.10/128,230.66
  6. Step 6: Final answer
    x = 52,079.61

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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.