Home / 129,797,257,668.39-179,121,267,288.49-71,926,604,145.23

Finding the Fourth Proportional to 129,797,257,668.39, 179,121,267,288.49 and 71,926,604,145.23

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Solution

The fourth proportional to 129,797,257,668.39, 179,121,267,288.49 and 71,926,604,145.23 is: 99,259,296,518.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,797,257,668.39 : 179,121,267,288.49 = 71,926,604,145.23 : x
  2. Step 2: Convert to fraction form
    129,797,257,668.39/179,121,267,288.49 = 71,926,604,145.23/x
  3. Step 3: Cross multiply
    129,797,257,668.39x = 179,121,267,288.49 × 71,926,604,145.23
  4. Step 4: Simplify right side
    129,797,257,668.39x = 12,883,584,486,250,437,935,104
  5. Step 5: Solve for x
    x = 12,883,584,486,250,437,935,104/129,797,257,668.39
  6. Step 6: Final answer
    x = 99,259,296,518.93

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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.