Home / 138,778.98-191,518.52-85,093.59

Finding the Fourth Proportional to 138,778.98, 191,518.52 and 85,093.59

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Solution

The fourth proportional to 138,778.98, 191,518.52 and 85,093.59 is: 117,431.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,778.98 : 191,518.52 = 85,093.59 : x
  2. Step 2: Convert to fraction form
    138,778.98/191,518.52 = 85,093.59/x
  3. Step 3: Cross multiply
    138,778.98x = 191,518.52 × 85,093.59
  4. Step 4: Simplify right side
    138,778.98x = 16,296,997,992.82
  5. Step 5: Solve for x
    x = 16,296,997,992.82/138,778.98
  6. Step 6: Final answer
    x = 117,431.31

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1.5x scale

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.