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Finding the Fourth Proportional to 101,264.18, 139,732.49 and 55,939.41

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Solution

The fourth proportional to 101,264.18, 139,732.49 and 55,939.41 is: 77,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,264.18 : 139,732.49 = 55,939.41 : x
  2. Step 2: Convert to fraction form
    101,264.18/139,732.49 = 55,939.41/x
  3. Step 3: Cross multiply
    101,264.18x = 139,732.49 × 55,939.41
  4. Step 4: Simplify right side
    101,264.18x = 7,816,553,188.28
  5. Step 5: Solve for x
    x = 7,816,553,188.28/101,264.18
  6. Step 6: Final answer
    x = 77,189.72

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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.