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Finding the Fourth Proportional to 141,805.80, 212,708.70 and 89,317.80

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Solution

The fourth proportional to 141,805.80, 212,708.70 and 89,317.80 is: 133,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,805.80 : 212,708.70 = 89,317.80 : x
  2. Step 2: Convert to fraction form
    141,805.80/212,708.70 = 89,317.80/x
  3. Step 3: Cross multiply
    141,805.80x = 212,708.70 × 89,317.80
  4. Step 4: Simplify right side
    141,805.80x = 18,998,673,124.86
  5. Step 5: Solve for x
    x = 18,998,673,124.86/141,805.80
  6. Step 6: Final answer
    x = 133,976.70

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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.