Home / 140,939.20-211,581.60-139,902.40

Finding the Fourth Proportional to 140,939.20, 211,581.60 and 139,902.40

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Solution

The fourth proportional to 140,939.20, 211,581.60 and 139,902.40 is: 210,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,939.20 : 211,581.60 = 139,902.40 : x
  2. Step 2: Convert to fraction form
    140,939.20/211,581.60 = 139,902.40/x
  3. Step 3: Cross multiply
    140,939.20x = 211,581.60 × 139,902.40
  4. Step 4: Simplify right side
    140,939.20x = 29,600,773,635.84
  5. Step 5: Solve for x
    x = 29,600,773,635.84/140,939.20
  6. Step 6: Final answer
    x = 210,025.13

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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.