Home / 123,580.28-185,371.36-80,921.64

Finding the Fourth Proportional to 123,580.28, 185,371.36 and 80,921.64

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Solution

The fourth proportional to 123,580.28, 185,371.36 and 80,921.64 is: 121,383.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,580.28 : 185,371.36 = 80,921.64 : x
  2. Step 2: Convert to fraction form
    123,580.28/185,371.36 = 80,921.64/x
  3. Step 3: Cross multiply
    123,580.28x = 185,371.36 × 80,921.64
  4. Step 4: Simplify right side
    123,580.28x = 15,000,554,460.23
  5. Step 5: Solve for x
    x = 15,000,554,460.23/123,580.28
  6. Step 6: Final answer
    x = 121,383.08

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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.