Home / 120,307,915,367.70-166,029,403,828.06-72,143,800,175.22

Finding the Fourth Proportional to 120,307,915,367.70, 166,029,403,828.06 and 72,143,800,175.22

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Solution

The fourth proportional to 120,307,915,367.70, 166,029,403,828.06 and 72,143,800,175.22 is: 99,561,131,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,307,915,367.70 : 166,029,403,828.06 = 72,143,800,175.22 : x
  2. Step 2: Convert to fraction form
    120,307,915,367.70/166,029,403,828.06 = 72,143,800,175.22/x
  3. Step 3: Cross multiply
    120,307,915,367.70x = 166,029,403,828.06 × 72,143,800,175.22
  4. Step 4: Simplify right side
    120,307,915,367.70x = 11,977,992,132,982,466,412,544
  5. Step 5: Solve for x
    x = 11,977,992,132,982,466,412,544/120,307,915,367.70
  6. Step 6: Final answer
    x = 99,561,131,089.12

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1.5x scale

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.