Home / 136,891,194-188,909,847.72-81,889,368.72

Finding the Fourth Proportional to 136,891,194, 188,909,847.72 and 81,889,368.72

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Solution

The fourth proportional to 136,891,194, 188,909,847.72 and 81,889,368.72 is: 113,007,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,891,194 : 188,909,847.72 = 81,889,368.72 : x
  2. Step 2: Convert to fraction form
    136,891,194/188,909,847.72 = 81,889,368.72/x
  3. Step 3: Cross multiply
    136,891,194x = 188,909,847.72 × 81,889,368.72
  4. Step 4: Simplify right side
    136,891,194x = 15,469,708,174,782,130
  5. Step 5: Solve for x
    x = 15,469,708,174,782,130/136,891,194
  6. Step 6: Final answer
    x = 113,007,328.83

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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.