Home / 105,841.20-158,720.76-53,213.88

Finding the Fourth Proportional to 105,841.20, 158,720.76 and 53,213.88

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Solution

The fourth proportional to 105,841.20, 158,720.76 and 53,213.88 is: 79,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,841.20 : 158,720.76 = 53,213.88 : x
  2. Step 2: Convert to fraction form
    105,841.20/158,720.76 = 53,213.88/x
  3. Step 3: Cross multiply
    105,841.20x = 158,720.76 × 53,213.88
  4. Step 4: Simplify right side
    105,841.20x = 8,446,147,476.15
  5. Step 5: Solve for x
    x = 8,446,147,476.15/105,841.20
  6. Step 6: Final answer
    x = 79,800.19

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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.