Home / 141,811.40-212,279.70-82,470.80

Finding the Fourth Proportional to 141,811.40, 212,279.70 and 82,470.80

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Solution

The fourth proportional to 141,811.40, 212,279.70 and 82,470.80 is: 123,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,811.40 : 212,279.70 = 82,470.80 : x
  2. Step 2: Convert to fraction form
    141,811.40/212,279.70 = 82,470.80/x
  3. Step 3: Cross multiply
    141,811.40x = 212,279.70 × 82,470.80
  4. Step 4: Simplify right side
    141,811.40x = 17,506,876,682.76
  5. Step 5: Solve for x
    x = 17,506,876,682.76/141,811.40
  6. Step 6: Final answer
    x = 123,451.83

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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.