Home / 138,852.29-208,138.20-54,671.54

Finding the Fourth Proportional to 138,852.29, 208,138.20 and 54,671.54

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Solution

The fourth proportional to 138,852.29, 208,138.20 and 54,671.54 is: 81,952.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,852.29 : 208,138.20 = 54,671.54 : x
  2. Step 2: Convert to fraction form
    138,852.29/208,138.20 = 54,671.54/x
  3. Step 3: Cross multiply
    138,852.29x = 208,138.20 × 54,671.54
  4. Step 4: Simplify right side
    138,852.29x = 11,379,234,886.14
  5. Step 5: Solve for x
    x = 11,379,234,886.14/138,852.29
  6. Step 6: Final answer
    x = 81,952.09

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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.