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Finding the Fourth Proportional to 115,146, 172,719 and 49,482

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Solution

The fourth proportional to 115,146, 172,719 and 49,482 is: 74,223

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,146 : 172,719 = 49,482 : x
  2. Step 2: Convert to fraction form
    115,146/172,719 = 49,482/x
  3. Step 3: Cross multiply
    115,146x = 172,719 × 49,482
  4. Step 4: Simplify right side
    115,146x = 8,546,481,558
  5. Step 5: Solve for x
    x = 8,546,481,558/115,146
  6. Step 6: Final answer
    x = 74,223

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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.