Home / 105,563.16-145,680.66-57,819.15

Finding the Fourth Proportional to 105,563.16, 145,680.66 and 57,819.15

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Solution

The fourth proportional to 105,563.16, 145,680.66 and 57,819.15 is: 79,792.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,563.16 : 145,680.66 = 57,819.15 : x
  2. Step 2: Convert to fraction form
    105,563.16/145,680.66 = 57,819.15/x
  3. Step 3: Cross multiply
    105,563.16x = 145,680.66 × 57,819.15
  4. Step 4: Simplify right side
    105,563.16x = 8,423,131,932.64
  5. Step 5: Solve for x
    x = 8,423,131,932.64/105,563.16
  6. Step 6: Final answer
    x = 79,792.34

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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.