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Finding the Fourth Proportional to 101,244.60, 139,718.88 and 55,922.45

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Solution

The fourth proportional to 101,244.60, 139,718.88 and 55,922.45 is: 77,173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,244.60 : 139,718.88 = 55,922.45 : x
  2. Step 2: Convert to fraction form
    101,244.60/139,718.88 = 55,922.45/x
  3. Step 3: Cross multiply
    101,244.60x = 139,718.88 × 55,922.45
  4. Step 4: Simplify right side
    101,244.60x = 7,813,421,382.26
  5. Step 5: Solve for x
    x = 7,813,421,382.26/101,244.60
  6. Step 6: Final answer
    x = 77,173.71

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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.