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Finding the Fourth Proportional to 115,148, 172,722 and 49,484

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Solution

The fourth proportional to 115,148, 172,722 and 49,484 is: 74,226

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,148 : 172,722 = 49,484 : x
  2. Step 2: Convert to fraction form
    115,148/172,722 = 49,484/x
  3. Step 3: Cross multiply
    115,148x = 172,722 × 49,484
  4. Step 4: Simplify right side
    115,148x = 8,546,975,448
  5. Step 5: Solve for x
    x = 8,546,975,448/115,148
  6. Step 6: Final answer
    x = 74,226

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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.