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Finding the Fourth Proportional to 192,079.08, 288,265.64 and 86,971.86

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Solution

The fourth proportional to 192,079.08, 288,265.64 and 86,971.86 is: 130,524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,079.08 : 288,265.64 = 86,971.86 : x
  2. Step 2: Convert to fraction form
    192,079.08/288,265.64 = 86,971.86/x
  3. Step 3: Cross multiply
    192,079.08x = 288,265.64 × 86,971.86
  4. Step 4: Simplify right side
    192,079.08x = 25,070,998,450.03
  5. Step 5: Solve for x
    x = 25,070,998,450.03/192,079.08
  6. Step 6: Final answer
    x = 130,524.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.