Home / 123,032,657.12-169,705,066.21-78,909,768.09

Finding the Fourth Proportional to 123,032,657.12, 169,705,066.21 and 78,909,768.09

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Solution

The fourth proportional to 123,032,657.12, 169,705,066.21 and 78,909,768.09 is: 108,844,169.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,032,657.12 : 169,705,066.21 = 78,909,768.09 : x
  2. Step 2: Convert to fraction form
    123,032,657.12/169,705,066.21 = 78,909,768.09/x
  3. Step 3: Cross multiply
    123,032,657.12x = 169,705,066.21 × 78,909,768.09
  4. Step 4: Simplify right side
    123,032,657.12x = 13,391,387,418,131,922
  5. Step 5: Solve for x
    x = 13,391,387,418,131,922/123,032,657.12
  6. Step 6: Final answer
    x = 108,844,169.77

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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.