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Finding the Fourth Proportional to 101,124.12, 139,551.18 and 55,802.09

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Solution

The fourth proportional to 101,124.12, 139,551.18 and 55,802.09 is: 77,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,124.12 : 139,551.18 = 55,802.09 : x
  2. Step 2: Convert to fraction form
    101,124.12/139,551.18 = 55,802.09/x
  3. Step 3: Cross multiply
    101,124.12x = 139,551.18 × 55,802.09
  4. Step 4: Simplify right side
    101,124.12x = 7,787,247,505.97
  5. Step 5: Solve for x
    x = 7,787,247,505.97/101,124.12
  6. Step 6: Final answer
    x = 77,006.83

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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.