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Finding the Fourth Proportional to 190,084.60, 285,126.90 and 49,857.40

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Solution

The fourth proportional to 190,084.60, 285,126.90 and 49,857.40 is: 74,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,084.60 : 285,126.90 = 49,857.40 : x
  2. Step 2: Convert to fraction form
    190,084.60/285,126.90 = 49,857.40/x
  3. Step 3: Cross multiply
    190,084.60x = 285,126.90 × 49,857.40
  4. Step 4: Simplify right side
    190,084.60x = 14,215,685,904.06
  5. Step 5: Solve for x
    x = 14,215,685,904.06/190,084.60
  6. Step 6: Final answer
    x = 74,786.10

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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.