Home / 138,109,427.82-190,562,559.12-79,360,742.73

Finding the Fourth Proportional to 138,109,427.82, 190,562,559.12 and 79,360,742.73

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Solution

The fourth proportional to 138,109,427.82, 190,562,559.12 and 79,360,742.73 is: 109,501,476.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109,427.82 : 190,562,559.12 = 79,360,742.73 : x
  2. Step 2: Convert to fraction form
    138,109,427.82/190,562,559.12 = 79,360,742.73/x
  3. Step 3: Cross multiply
    138,109,427.82x = 190,562,559.12 × 79,360,742.73
  4. Step 4: Simplify right side
    138,109,427.82x = 15,123,186,228,292,736
  5. Step 5: Solve for x
    x = 15,123,186,228,292,736/138,109,427.82
  6. Step 6: Final answer
    x = 109,501,476.24

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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.