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Finding the Fourth Proportional to 141,609.70, 212,414.55 and 78,624.10

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Solution

The fourth proportional to 141,609.70, 212,414.55 and 78,624.10 is: 117,936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,609.70 : 212,414.55 = 78,624.10 : x
  2. Step 2: Convert to fraction form
    141,609.70/212,414.55 = 78,624.10/x
  3. Step 3: Cross multiply
    141,609.70x = 212,414.55 × 78,624.10
  4. Step 4: Simplify right side
    141,609.70x = 16,700,902,820.66
  5. Step 5: Solve for x
    x = 16,700,902,820.66/141,609.70
  6. Step 6: Final answer
    x = 117,936.15

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1.5x scale

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.