Home / 138,428.22-207,659.67-54,177.51

Finding the Fourth Proportional to 138,428.22, 207,659.67 and 54,177.51

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Solution

The fourth proportional to 138,428.22, 207,659.67 and 54,177.51 is: 81,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,428.22 : 207,659.67 = 54,177.51 : x
  2. Step 2: Convert to fraction form
    138,428.22/207,659.67 = 54,177.51/x
  3. Step 3: Cross multiply
    138,428.22x = 207,659.67 × 54,177.51
  4. Step 4: Simplify right side
    138,428.22x = 11,250,483,848.02
  5. Step 5: Solve for x
    x = 11,250,483,848.02/138,428.22
  6. Step 6: Final answer
    x = 81,273.05

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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.