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Finding the Fourth Proportional to 141,563.70, 212,345.55 and 79,226.10

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Solution

The fourth proportional to 141,563.70, 212,345.55 and 79,226.10 is: 118,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,563.70 : 212,345.55 = 79,226.10 : x
  2. Step 2: Convert to fraction form
    141,563.70/212,345.55 = 79,226.10/x
  3. Step 3: Cross multiply
    141,563.70x = 212,345.55 × 79,226.10
  4. Step 4: Simplify right side
    141,563.70x = 16,823,309,778.86
  5. Step 5: Solve for x
    x = 16,823,309,778.86/141,563.70
  6. Step 6: Final answer
    x = 118,839.15

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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.