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Finding the Fourth Proportional to 138,856.98, 208,145.22 and 54,676.22

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Solution

The fourth proportional to 138,856.98, 208,145.22 and 54,676.22 is: 81,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,856.98 : 208,145.22 = 54,676.22 : x
  2. Step 2: Convert to fraction form
    138,856.98/208,145.22 = 54,676.22/x
  3. Step 3: Cross multiply
    138,856.98x = 208,145.22 × 54,676.22
  4. Step 4: Simplify right side
    138,856.98x = 11,380,593,840.67
  5. Step 5: Solve for x
    x = 11,380,593,840.67/138,856.98
  6. Step 6: Final answer
    x = 81,959.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.