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Finding the Fourth Proportional to 136,322.55, 188,121.45 and 75,893.21

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Solution

The fourth proportional to 136,322.55, 188,121.45 and 75,893.21 is: 104,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,322.55 : 188,121.45 = 75,893.21 : x
  2. Step 2: Convert to fraction form
    136,322.55/188,121.45 = 75,893.21/x
  3. Step 3: Cross multiply
    136,322.55x = 188,121.45 × 75,893.21
  4. Step 4: Simplify right side
    136,322.55x = 14,277,139,769.75
  5. Step 5: Solve for x
    x = 14,277,139,769.75/136,322.55
  6. Step 6: Final answer
    x = 104,730.58

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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.