Home / 136,563.62-188,457.92-76,133.06

Finding the Fourth Proportional to 136,563.62, 188,457.92 and 76,133.06

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Solution

The fourth proportional to 136,563.62, 188,457.92 and 76,133.06 is: 105,063.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,563.62 : 188,457.92 = 76,133.06 : x
  2. Step 2: Convert to fraction form
    136,563.62/188,457.92 = 76,133.06/x
  3. Step 3: Cross multiply
    136,563.62x = 188,457.92 × 76,133.06
  4. Step 4: Simplify right side
    136,563.62x = 14,347,877,378.88
  5. Step 5: Solve for x
    x = 14,347,877,378.88/136,563.62
  6. Step 6: Final answer
    x = 105,063.68

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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.