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Finding the Fourth Proportional to 136,805.76, 188,793.80 and 75,556.07

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Solution

The fourth proportional to 136,805.76, 188,793.80 and 75,556.07 is: 104,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,805.76 : 188,793.80 = 75,556.07 : x
  2. Step 2: Convert to fraction form
    136,805.76/188,793.80 = 75,556.07/x
  3. Step 3: Cross multiply
    136,805.76x = 188,793.80 × 75,556.07
  4. Step 4: Simplify right side
    136,805.76x = 14,264,516,246.62
  5. Step 5: Solve for x
    x = 14,264,516,246.62/136,805.76
  6. Step 6: Final answer
    x = 104,268.39

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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.