Home / 138,485,433.15-191,093,248.02-79,767,195.03

Finding the Fourth Proportional to 138,485,433.15, 191,093,248.02 and 79,767,195.03

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Solution

The fourth proportional to 138,485,433.15, 191,093,248.02 and 79,767,195.03 is: 110,069,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,433.15 : 191,093,248.02 = 79,767,195.03 : x
  2. Step 2: Convert to fraction form
    138,485,433.15/191,093,248.02 = 79,767,195.03/x
  3. Step 3: Cross multiply
    138,485,433.15x = 191,093,248.02 × 79,767,195.03
  4. Step 4: Simplify right side
    138,485,433.15x = 15,242,972,383,727,502
  5. Step 5: Solve for x
    x = 15,242,972,383,727,502/138,485,433.15
  6. Step 6: Final answer
    x = 110,069,138.95

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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.