Home / 100,399.24-138,493.38-62,607.88

Finding the Fourth Proportional to 100,399.24, 138,493.38 and 62,607.88

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Solution

The fourth proportional to 100,399.24, 138,493.38 and 62,607.88 is: 86,362.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,399.24 : 138,493.38 = 62,607.88 : x
  2. Step 2: Convert to fraction form
    100,399.24/138,493.38 = 62,607.88/x
  3. Step 3: Cross multiply
    100,399.24x = 138,493.38 × 62,607.88
  4. Step 4: Simplify right side
    100,399.24x = 8,670,776,915.83
  5. Step 5: Solve for x
    x = 8,670,776,915.83/100,399.24
  6. Step 6: Final answer
    x = 86,362.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.