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Finding the Fourth Proportional to 128,574.61, 192,846.55 and 33,812.17

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Solution

The fourth proportional to 128,574.61, 192,846.55 and 33,812.17 is: 50,714.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574.61 : 192,846.55 = 33,812.17 : x
  2. Step 2: Convert to fraction form
    128,574.61/192,846.55 = 33,812.17/x
  3. Step 3: Cross multiply
    128,574.61x = 192,846.55 × 33,812.17
  4. Step 4: Simplify right side
    128,574.61x = 6,520,560,899.16
  5. Step 5: Solve for x
    x = 6,520,560,899.16/128,574.61
  6. Step 6: Final answer
    x = 50,714.22

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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.