Home / 138,637.28-207,955.86-54,437.06

Finding the Fourth Proportional to 138,637.28, 207,955.86 and 54,437.06

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Solution

The fourth proportional to 138,637.28, 207,955.86 and 54,437.06 is: 81,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,637.28 : 207,955.86 = 54,437.06 : x
  2. Step 2: Convert to fraction form
    138,637.28/207,955.86 = 54,437.06/x
  3. Step 3: Cross multiply
    138,637.28x = 207,955.86 × 54,437.06
  4. Step 4: Simplify right side
    138,637.28x = 11,320,504,588.39
  5. Step 5: Solve for x
    x = 11,320,504,588.39/138,637.28
  6. Step 6: Final answer
    x = 81,655.56

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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.