Home / 120,446,080.80-180,669,121.20-86,685,799.20

Finding the Fourth Proportional to 120,446,080.80, 180,669,121.20 and 86,685,799.20

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Solution

The fourth proportional to 120,446,080.80, 180,669,121.20 and 86,685,799.20 is: 130,028,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,446,080.80 : 180,669,121.20 = 86,685,799.20 : x
  2. Step 2: Convert to fraction form
    120,446,080.80/180,669,121.20 = 86,685,799.20/x
  3. Step 3: Cross multiply
    120,446,080.80x = 180,669,121.20 × 86,685,799.20
  4. Step 4: Simplify right side
    120,446,080.80x = 15,661,447,161,983,662
  5. Step 5: Solve for x
    x = 15,661,447,161,983,662/120,446,080.80
  6. Step 6: Final answer
    x = 130,028,698.80

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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.