Home / 138,819.33-208,314.66-54,564.72

Finding the Fourth Proportional to 138,819.33, 208,314.66 and 54,564.72

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Solution

The fourth proportional to 138,819.33, 208,314.66 and 54,564.72 is: 81,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,819.33 : 208,314.66 = 54,564.72 : x
  2. Step 2: Convert to fraction form
    138,819.33/208,314.66 = 54,564.72/x
  3. Step 3: Cross multiply
    138,819.33x = 208,314.66 × 54,564.72
  4. Step 4: Simplify right side
    138,819.33x = 11,366,631,094.80
  5. Step 5: Solve for x
    x = 11,366,631,094.80/138,819.33
  6. Step 6: Final answer
    x = 81,880.75

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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.