Home / 138,780.36-208,031.70-63,954.54

Finding the Fourth Proportional to 138,780.36, 208,031.70 and 63,954.54

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Solution

The fourth proportional to 138,780.36, 208,031.70 and 63,954.54 is: 95,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,780.36 : 208,031.70 = 63,954.54 : x
  2. Step 2: Convert to fraction form
    138,780.36/208,031.70 = 63,954.54/x
  3. Step 3: Cross multiply
    138,780.36x = 208,031.70 × 63,954.54
  4. Step 4: Simplify right side
    138,780.36x = 13,304,571,678.92
  5. Step 5: Solve for x
    x = 13,304,571,678.92/138,780.36
  6. Step 6: Final answer
    x = 95,867.83

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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.