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Finding the Fourth Proportional to 172,936.71, 238,705.83 and 101,339.79

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Solution

The fourth proportional to 172,936.71, 238,705.83 and 101,339.79 is: 139,880.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,936.71 : 238,705.83 = 101,339.79 : x
  2. Step 2: Convert to fraction form
    172,936.71/238,705.83 = 101,339.79/x
  3. Step 3: Cross multiply
    172,936.71x = 238,705.83 × 101,339.79
  4. Step 4: Simplify right side
    172,936.71x = 24,190,398,683.98
  5. Step 5: Solve for x
    x = 24,190,398,683.98/172,936.71
  6. Step 6: Final answer
    x = 139,880.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.