Home / 159,072.91-219,521.19-87,457.47

Finding the Fourth Proportional to 159,072.91, 219,521.19 and 87,457.47

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Solution

The fourth proportional to 159,072.91, 219,521.19 and 87,457.47 is: 120,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,072.91 : 219,521.19 = 87,457.47 : x
  2. Step 2: Convert to fraction form
    159,072.91/219,521.19 = 87,457.47/x
  3. Step 3: Cross multiply
    159,072.91x = 219,521.19 × 87,457.47
  4. Step 4: Simplify right side
    159,072.91x = 19,198,768,136.41
  5. Step 5: Solve for x
    x = 19,198,768,136.41/159,072.91
  6. Step 6: Final answer
    x = 120,691.62

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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.