Home / 7,128,108.20-10,694,610.30-2,080,159.40

Finding the Fourth Proportional to 7,128,108.20, 10,694,610.30 and 2,080,159.40

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Solution

The fourth proportional to 7,128,108.20, 10,694,610.30 and 2,080,159.40 is: 3,120,953.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,108.20 : 10,694,610.30 = 2,080,159.40 : x
  2. Step 2: Convert to fraction form
    7,128,108.20/10,694,610.30 = 2,080,159.40/x
  3. Step 3: Cross multiply
    7,128,108.20x = 10,694,610.30 × 2,080,159.40
  4. Step 4: Simplify right side
    7,128,108.20x = 22,246,494,144,881.82
  5. Step 5: Solve for x
    x = 22,246,494,144,881.82/7,128,108.20
  6. Step 6: Final answer
    x = 3,120,953.49

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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.