Home / 165,168,720.51-247,753,067.09-78,644,811.30

Finding the Fourth Proportional to 165,168,720.51, 247,753,067.09 and 78,644,811.30

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Solution

The fourth proportional to 165,168,720.51, 247,753,067.09 and 78,644,811.30 is: 117,967,210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,168,720.51 : 247,753,067.09 = 78,644,811.30 : x
  2. Step 2: Convert to fraction form
    165,168,720.51/247,753,067.09 = 78,644,811.30/x
  3. Step 3: Cross multiply
    165,168,720.51x = 247,753,067.09 × 78,644,811.30
  4. Step 4: Simplify right side
    165,168,720.51x = 19,484,493,209,408,976
  5. Step 5: Solve for x
    x = 19,484,493,209,408,976/165,168,720.51
  6. Step 6: Final answer
    x = 117,967,210.44

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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.