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Finding the Fourth Proportional to 128,089.84, 192,143.98 and 49,204.12

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Solution

The fourth proportional to 128,089.84, 192,143.98 and 49,204.12 is: 73,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.84 : 192,143.98 = 49,204.12 : x
  2. Step 2: Convert to fraction form
    128,089.84/192,143.98 = 49,204.12/x
  3. Step 3: Cross multiply
    128,089.84x = 192,143.98 × 49,204.12
  4. Step 4: Simplify right side
    128,089.84x = 9,454,275,449.20
  5. Step 5: Solve for x
    x = 9,454,275,449.20/128,089.84
  6. Step 6: Final answer
    x = 73,809.72

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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.