Home / 129,718,843.88-179,006,658.36-77,536,649.66

Finding the Fourth Proportional to 129,718,843.88, 179,006,658.36 and 77,536,649.66

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Solution

The fourth proportional to 129,718,843.88, 179,006,658.36 and 77,536,649.66 is: 106,997,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,718,843.88 : 179,006,658.36 = 77,536,649.66 : x
  2. Step 2: Convert to fraction form
    129,718,843.88/179,006,658.36 = 77,536,649.66/x
  3. Step 3: Cross multiply
    129,718,843.88x = 179,006,658.36 × 77,536,649.66
  4. Step 4: Simplify right side
    129,718,843.88x = 13,879,576,556,066,630
  5. Step 5: Solve for x
    x = 13,879,576,556,066,630/129,718,843.88
  6. Step 6: Final answer
    x = 106,997,380.96

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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.