Home / 133,170.25-183,780.35-76,581.63

Finding the Fourth Proportional to 133,170.25, 183,780.35 and 76,581.63

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Solution

The fourth proportional to 133,170.25, 183,780.35 and 76,581.63 is: 105,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,170.25 : 183,780.35 = 76,581.63 : x
  2. Step 2: Convert to fraction form
    133,170.25/183,780.35 = 76,581.63/x
  3. Step 3: Cross multiply
    133,170.25x = 183,780.35 × 76,581.63
  4. Step 4: Simplify right side
    133,170.25x = 14,074,198,764.97
  5. Step 5: Solve for x
    x = 14,074,198,764.97/133,170.25
  6. Step 6: Final answer
    x = 105,685.76

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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.