Home / 120,882,006.80-181,323,010.20-87,121,725.20

Finding the Fourth Proportional to 120,882,006.80, 181,323,010.20 and 87,121,725.20

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Solution

The fourth proportional to 120,882,006.80, 181,323,010.20 and 87,121,725.20 is: 130,682,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,882,006.80 : 181,323,010.20 = 87,121,725.20 : x
  2. Step 2: Convert to fraction form
    120,882,006.80/181,323,010.20 = 87,121,725.20/x
  3. Step 3: Cross multiply
    120,882,006.80x = 181,323,010.20 × 87,121,725.20
  4. Step 4: Simplify right side
    120,882,006.80x = 15,797,173,467,081,196
  5. Step 5: Solve for x
    x = 15,797,173,467,081,196/120,882,006.80
  6. Step 6: Final answer
    x = 130,682,587.80

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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.