Home / 138,485,432.66-191,093,247.34-79,767,194.54

Finding the Fourth Proportional to 138,485,432.66, 191,093,247.34 and 79,767,194.54

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Solution

The fourth proportional to 138,485,432.66, 191,093,247.34 and 79,767,194.54 is: 110,069,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,432.66 : 191,093,247.34 = 79,767,194.54 : x
  2. Step 2: Convert to fraction form
    138,485,432.66/191,093,247.34 = 79,767,194.54/x
  3. Step 3: Cross multiply
    138,485,432.66x = 191,093,247.34 × 79,767,194.54
  4. Step 4: Simplify right side
    138,485,432.66x = 15,242,972,235,850,120
  5. Step 5: Solve for x
    x = 15,242,972,235,850,120/138,485,432.66
  6. Step 6: Final answer
    x = 110,069,138.27

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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.