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Finding the Fourth Proportional to 136,352.76, 188,114.52 and 84,645.60

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Solution

The fourth proportional to 136,352.76, 188,114.52 and 84,645.60 is: 116,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,352.76 : 188,114.52 = 84,645.60 : x
  2. Step 2: Convert to fraction form
    136,352.76/188,114.52 = 84,645.60/x
  3. Step 3: Cross multiply
    136,352.76x = 188,114.52 × 84,645.60
  4. Step 4: Simplify right side
    136,352.76x = 15,923,066,414.11
  5. Step 5: Solve for x
    x = 15,923,066,414.11/136,352.76
  6. Step 6: Final answer
    x = 116,778.47

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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.