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Finding the Fourth Proportional to 136,606.58, 188,539.78 and 79,279.84

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Solution

The fourth proportional to 136,606.58, 188,539.78 and 79,279.84 is: 109,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,606.58 : 188,539.78 = 79,279.84 : x
  2. Step 2: Convert to fraction form
    136,606.58/188,539.78 = 79,279.84/x
  3. Step 3: Cross multiply
    136,606.58x = 188,539.78 × 79,279.84
  4. Step 4: Simplify right side
    136,606.58x = 14,947,403,592.04
  5. Step 5: Solve for x
    x = 14,947,403,592.04/136,606.58
  6. Step 6: Final answer
    x = 109,419.35

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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.