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Finding the Fourth Proportional to 136,453.92, 188,293.92 and 79,869.60

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Solution

The fourth proportional to 136,453.92, 188,293.92 and 79,869.60 is: 110,212.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,453.92 : 188,293.92 = 79,869.60 : x
  2. Step 2: Convert to fraction form
    136,453.92/188,293.92 = 79,869.60/x
  3. Step 3: Cross multiply
    136,453.92x = 188,293.92 × 79,869.60
  4. Step 4: Simplify right side
    136,453.92x = 15,038,960,072.83
  5. Step 5: Solve for x
    x = 15,038,960,072.83/136,453.92
  6. Step 6: Final answer
    x = 110,212.74

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1.5x scale

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.