Home / 140,540.10-210,846.15-81,269.70

Finding the Fourth Proportional to 140,540.10, 210,846.15 and 81,269.70

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Solution

The fourth proportional to 140,540.10, 210,846.15 and 81,269.70 is: 121,925.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,540.10 : 210,846.15 = 81,269.70 : x
  2. Step 2: Convert to fraction form
    140,540.10/210,846.15 = 81,269.70/x
  3. Step 3: Cross multiply
    140,540.10x = 210,846.15 × 81,269.70
  4. Step 4: Simplify right side
    140,540.10x = 17,135,403,356.66
  5. Step 5: Solve for x
    x = 17,135,403,356.66/140,540.10
  6. Step 6: Final answer
    x = 121,925.37

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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.