Home / 100,362.24-138,427.38-85,231.04

Finding the Fourth Proportional to 100,362.24, 138,427.38 and 85,231.04

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Solution

The fourth proportional to 100,362.24, 138,427.38 and 85,231.04 is: 117,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.24 : 138,427.38 = 85,231.04 : x
  2. Step 2: Convert to fraction form
    100,362.24/138,427.38 = 85,231.04/x
  3. Step 3: Cross multiply
    100,362.24x = 138,427.38 × 85,231.04
  4. Step 4: Simplify right side
    100,362.24x = 11,798,308,869.74
  5. Step 5: Solve for x
    x = 11,798,308,869.74/100,362.24
  6. Step 6: Final answer
    x = 117,557.25

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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.