Home / 170,991.11-256,491.02-81,012.73

Finding the Fourth Proportional to 170,991.11, 256,491.02 and 81,012.73

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Solution

The fourth proportional to 170,991.11, 256,491.02 and 81,012.73 is: 121,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,991.11 : 256,491.02 = 81,012.73 : x
  2. Step 2: Convert to fraction form
    170,991.11/256,491.02 = 81,012.73/x
  3. Step 3: Cross multiply
    170,991.11x = 256,491.02 × 81,012.73
  4. Step 4: Simplify right side
    170,991.11x = 20,779,037,750.68
  5. Step 5: Solve for x
    x = 20,779,037,750.68/170,991.11
  6. Step 6: Final answer
    x = 121,521.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.