Home / 420,162.42-630,325.58-135,923.43

Finding the Fourth Proportional to 420,162.42, 630,325.58 and 135,923.43

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Solution

The fourth proportional to 420,162.42, 630,325.58 and 135,923.43 is: 203,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,162.42 : 630,325.58 = 135,923.43 : x
  2. Step 2: Convert to fraction form
    420,162.42/630,325.58 = 135,923.43/x
  3. Step 3: Cross multiply
    420,162.42x = 630,325.58 × 135,923.43
  4. Step 4: Simplify right side
    420,162.42x = 85,676,014,170.72
  5. Step 5: Solve for x
    x = 85,676,014,170.72/420,162.42
  6. Step 6: Final answer
    x = 203,911.65

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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.