Home / 138,824.72-208,322.76-54,570.14

Finding the Fourth Proportional to 138,824.72, 208,322.76 and 54,570.14

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Solution

The fourth proportional to 138,824.72, 208,322.76 and 54,570.14 is: 81,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,824.72 : 208,322.76 = 54,570.14 : x
  2. Step 2: Convert to fraction form
    138,824.72/208,322.76 = 54,570.14/x
  3. Step 3: Cross multiply
    138,824.72x = 208,322.76 × 54,570.14
  4. Step 4: Simplify right side
    138,824.72x = 11,368,202,178.39
  5. Step 5: Solve for x
    x = 11,368,202,178.39/138,824.72
  6. Step 6: Final answer
    x = 81,888.89

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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.