Home / 144,328.49-199,169.87-80,672.21

Finding the Fourth Proportional to 144,328.49, 199,169.87 and 80,672.21

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Solution

The fourth proportional to 144,328.49, 199,169.87 and 80,672.21 is: 111,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,328.49 : 199,169.87 = 80,672.21 : x
  2. Step 2: Convert to fraction form
    144,328.49/199,169.87 = 80,672.21/x
  3. Step 3: Cross multiply
    144,328.49x = 199,169.87 × 80,672.21
  4. Step 4: Simplify right side
    144,328.49x = 16,067,473,269.86
  5. Step 5: Solve for x
    x = 16,067,473,269.86/144,328.49
  6. Step 6: Final answer
    x = 111,325.72

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1.5x scale

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.