Home / 159,229.31-219,645.18-99,509.63

Finding the Fourth Proportional to 159,229.31, 219,645.18 and 99,509.63

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Solution

The fourth proportional to 159,229.31, 219,645.18 and 99,509.63 is: 137,266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,229.31 : 219,645.18 = 99,509.63 : x
  2. Step 2: Convert to fraction form
    159,229.31/219,645.18 = 99,509.63/x
  3. Step 3: Cross multiply
    159,229.31x = 219,645.18 × 99,509.63
  4. Step 4: Simplify right side
    159,229.31x = 21,856,809,494.86
  5. Step 5: Solve for x
    x = 21,856,809,494.86/159,229.31
  6. Step 6: Final answer
    x = 137,266.25

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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.