Home / 138,109,406.53-190,562,529.77-79,360,721.44

Finding the Fourth Proportional to 138,109,406.53, 190,562,529.77 and 79,360,721.44

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Solution

The fourth proportional to 138,109,406.53, 190,562,529.77 and 79,360,721.44 is: 109,501,446.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109,406.53 : 190,562,529.77 = 79,360,721.44 : x
  2. Step 2: Convert to fraction form
    138,109,406.53/190,562,529.77 = 79,360,721.44/x
  3. Step 3: Cross multiply
    138,109,406.53x = 190,562,529.77 × 79,360,721.44
  4. Step 4: Simplify right side
    138,109,406.53x = 15,123,179,842,001,854
  5. Step 5: Solve for x
    x = 15,123,179,842,001,854/138,109,406.53
  6. Step 6: Final answer
    x = 109,501,446.87

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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.