Home / 121,795,320.74-168,077,362.77-66,040,639.83

Finding the Fourth Proportional to 121,795,320.74, 168,077,362.77 and 66,040,639.83

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Solution

The fourth proportional to 121,795,320.74, 168,077,362.77 and 66,040,639.83 is: 91,135,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,795,320.74 : 168,077,362.77 = 66,040,639.83 : x
  2. Step 2: Convert to fraction form
    121,795,320.74/168,077,362.77 = 66,040,639.83/x
  3. Step 3: Cross multiply
    121,795,320.74x = 168,077,362.77 × 66,040,639.83
  4. Step 4: Simplify right side
    121,795,320.74x = 11,099,936,578,269,822
  5. Step 5: Solve for x
    x = 11,099,936,578,269,822/121,795,320.74
  6. Step 6: Final answer
    x = 91,135,985.45

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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.