Home / 117,221,813.66-161,795,499.48-79,608,619.91

Finding the Fourth Proportional to 117,221,813.66, 161,795,499.48 and 79,608,619.91

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Solution

The fourth proportional to 117,221,813.66, 161,795,499.48 and 79,608,619.91 is: 109,879,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221,813.66 : 161,795,499.48 = 79,608,619.91 : x
  2. Step 2: Convert to fraction form
    117,221,813.66/161,795,499.48 = 79,608,619.91/x
  3. Step 3: Cross multiply
    117,221,813.66x = 161,795,499.48 × 79,608,619.91
  4. Step 4: Simplify right side
    117,221,813.66x = 12,880,316,420,442,944
  5. Step 5: Solve for x
    x = 12,880,316,420,442,944/117,221,813.66
  6. Step 6: Final answer
    x = 109,879,859.55

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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.