Home / 259,849.70-390,102.60-140,002.10

Finding the Fourth Proportional to 259,849.70, 390,102.60 and 140,002.10

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Solution

The fourth proportional to 259,849.70, 390,102.60 and 140,002.10 is: 210,179.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,849.70 : 390,102.60 = 140,002.10 : x
  2. Step 2: Convert to fraction form
    259,849.70/390,102.60 = 140,002.10/x
  3. Step 3: Cross multiply
    259,849.70x = 390,102.60 × 140,002.10
  4. Step 4: Simplify right side
    259,849.70x = 54,615,183,215.46
  5. Step 5: Solve for x
    x = 54,615,183,215.46/259,849.70
  6. Step 6: Final answer
    x = 210,179.90

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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.