Home / 121,945,815.82-168,280,871.79-69,021,387.82

Finding the Fourth Proportional to 121,945,815.82, 168,280,871.79 and 69,021,387.82

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Solution

The fourth proportional to 121,945,815.82, 168,280,871.79 and 69,021,387.82 is: 95,247,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,945,815.82 : 168,280,871.79 = 69,021,387.82 : x
  2. Step 2: Convert to fraction form
    121,945,815.82/168,280,871.79 = 69,021,387.82/x
  3. Step 3: Cross multiply
    121,945,815.82x = 168,280,871.79 × 69,021,387.82
  4. Step 4: Simplify right side
    121,945,815.82x = 11,614,979,314,505,286
  5. Step 5: Solve for x
    x = 11,614,979,314,505,286/121,945,815.82
  6. Step 6: Final answer
    x = 95,247,050.80

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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.