Home / 121,293,669.90-181,940,504.85-108,192,665.10

Finding the Fourth Proportional to 121,293,669.90, 181,940,504.85 and 108,192,665.10

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Solution

The fourth proportional to 121,293,669.90, 181,940,504.85 and 108,192,665.10 is: 162,288,997.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,293,669.90 : 181,940,504.85 = 108,192,665.10 : x
  2. Step 2: Convert to fraction form
    121,293,669.90/181,940,504.85 = 108,192,665.10/x
  3. Step 3: Cross multiply
    121,293,669.90x = 181,940,504.85 × 108,192,665.10
  4. Step 4: Simplify right side
    121,293,669.90x = 19,684,628,109,360,976
  5. Step 5: Solve for x
    x = 19,684,628,109,360,976/121,293,669.90
  6. Step 6: Final answer
    x = 162,288,997.65

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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.