Home / 80,903.10-121,354.65-73,029.90

Finding the Fourth Proportional to 80,903.10, 121,354.65 and 73,029.90

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Solution

The fourth proportional to 80,903.10, 121,354.65 and 73,029.90 is: 109,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,903.10 : 121,354.65 = 73,029.90 : x
  2. Step 2: Convert to fraction form
    80,903.10/121,354.65 = 73,029.90/x
  3. Step 3: Cross multiply
    80,903.10x = 121,354.65 × 73,029.90
  4. Step 4: Simplify right side
    80,903.10x = 8,862,517,954.04
  5. Step 5: Solve for x
    x = 8,862,517,954.04/80,903.10
  6. Step 6: Final answer
    x = 109,544.85

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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.