Home / 159,399.12-219,966.48-91,427.52

Finding the Fourth Proportional to 159,399.12, 219,966.48 and 91,427.52

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Solution

The fourth proportional to 159,399.12, 219,966.48 and 91,427.52 is: 126,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,399.12 : 219,966.48 = 91,427.52 : x
  2. Step 2: Convert to fraction form
    159,399.12/219,966.48 = 91,427.52/x
  3. Step 3: Cross multiply
    159,399.12x = 219,966.48 × 91,427.52
  4. Step 4: Simplify right side
    159,399.12x = 20,110,989,749.53
  5. Step 5: Solve for x
    x = 20,110,989,749.53/159,399.12
  6. Step 6: Final answer
    x = 126,167.51

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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.