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Finding the Fourth Proportional to 110,714,687.80, 166,072,031.70 and 80,103,686.20

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Solution

The fourth proportional to 110,714,687.80, 166,072,031.70 and 80,103,686.20 is: 120,155,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,714,687.80 : 166,072,031.70 = 80,103,686.20 : x
  2. Step 2: Convert to fraction form
    110,714,687.80/166,072,031.70 = 80,103,686.20/x
  3. Step 3: Cross multiply
    110,714,687.80x = 166,072,031.70 × 80,103,686.20
  4. Step 4: Simplify right side
    110,714,687.80x = 13,302,981,913,893,252
  5. Step 5: Solve for x
    x = 13,302,981,913,893,252/110,714,687.80
  6. Step 6: Final answer
    x = 120,155,529.30

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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.