Home / 138,485,433.66-191,093,248.72-79,767,195.54

Finding the Fourth Proportional to 138,485,433.66, 191,093,248.72 and 79,767,195.54

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Solution

The fourth proportional to 138,485,433.66, 191,093,248.72 and 79,767,195.54 is: 110,069,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,433.66 : 191,093,248.72 = 79,767,195.54 : x
  2. Step 2: Convert to fraction form
    138,485,433.66/191,093,248.72 = 79,767,195.54/x
  3. Step 3: Cross multiply
    138,485,433.66x = 191,093,248.72 × 79,767,195.54
  4. Step 4: Simplify right side
    138,485,433.66x = 15,242,972,537,022,096
  5. Step 5: Solve for x
    x = 15,242,972,537,022,096/138,485,433.66
  6. Step 6: Final answer
    x = 110,069,139.65

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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.