Home / 159,111.72-219,519.53-98,660.61

Finding the Fourth Proportional to 159,111.72, 219,519.53 and 98,660.61

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Solution

The fourth proportional to 159,111.72, 219,519.53 and 98,660.61 is: 136,117.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,111.72 : 219,519.53 = 98,660.61 : x
  2. Step 2: Convert to fraction form
    159,111.72/219,519.53 = 98,660.61/x
  3. Step 3: Cross multiply
    159,111.72x = 219,519.53 × 98,660.61
  4. Step 4: Simplify right side
    159,111.72x = 21,657,930,243.41
  5. Step 5: Solve for x
    x = 21,657,930,243.41/159,111.72
  6. Step 6: Final answer
    x = 136,117.76

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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.