Home / 123,990,419.20-171,104,109.44-71,781,661.44

Finding the Fourth Proportional to 123,990,419.20, 171,104,109.44 and 71,781,661.44

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Solution

The fourth proportional to 123,990,419.20, 171,104,109.44 and 71,781,661.44 is: 99,057,147.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,990,419.20 : 171,104,109.44 = 71,781,661.44 : x
  2. Step 2: Convert to fraction form
    123,990,419.20/171,104,109.44 = 71,781,661.44/x
  3. Step 3: Cross multiply
    123,990,419.20x = 171,104,109.44 × 71,781,661.44
  4. Step 4: Simplify right side
    123,990,419.20x = 12,282,137,254,814,788
  5. Step 5: Solve for x
    x = 12,282,137,254,814,788/123,990,419.20
  6. Step 6: Final answer
    x = 99,057,147.59

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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.