Home / 140,140.10-209,979.30-80,872.40

Finding the Fourth Proportional to 140,140.10, 209,979.30 and 80,872.40

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Solution

The fourth proportional to 140,140.10, 209,979.30 and 80,872.40 is: 121,175.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,140.10 : 209,979.30 = 80,872.40 : x
  2. Step 2: Convert to fraction form
    140,140.10/209,979.30 = 80,872.40/x
  3. Step 3: Cross multiply
    140,140.10x = 209,979.30 × 80,872.40
  4. Step 4: Simplify right side
    140,140.10x = 16,981,529,941.32
  5. Step 5: Solve for x
    x = 16,981,529,941.32/140,140.10
  6. Step 6: Final answer
    x = 121,175.38

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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.