Home / 105,514.43-145,608.99-57,116.12

Finding the Fourth Proportional to 105,514.43, 145,608.99 and 57,116.12

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Solution

The fourth proportional to 105,514.43, 145,608.99 and 57,116.12 is: 78,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,514.43 : 145,608.99 = 57,116.12 : x
  2. Step 2: Convert to fraction form
    105,514.43/145,608.99 = 57,116.12/x
  3. Step 3: Cross multiply
    105,514.43x = 145,608.99 × 57,116.12
  4. Step 4: Simplify right side
    105,514.43x = 8,316,619,817.87
  5. Step 5: Solve for x
    x = 8,316,619,817.87/105,514.43
  6. Step 6: Final answer
    x = 78,819.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.