Home / 12,115,138.80-18,172,708.20-8,084,060.40

Finding the Fourth Proportional to 12,115,138.80, 18,172,708.20 and 8,084,060.40

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Solution

The fourth proportional to 12,115,138.80, 18,172,708.20 and 8,084,060.40 is: 12,126,090.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,138.80 : 18,172,708.20 = 8,084,060.40 : x
  2. Step 2: Convert to fraction form
    12,115,138.80/18,172,708.20 = 8,084,060.40/x
  3. Step 3: Cross multiply
    12,115,138.80x = 18,172,708.20 × 8,084,060.40
  4. Step 4: Simplify right side
    12,115,138.80x = 146,909,270,720,375.28
  5. Step 5: Solve for x
    x = 146,909,270,720,375.28/12,115,138.80
  6. Step 6: Final answer
    x = 12,126,090.60

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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.