Home / 135,792.41-187,416.05-79,203.78

Finding the Fourth Proportional to 135,792.41, 187,416.05 and 79,203.78

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Solution

The fourth proportional to 135,792.41, 187,416.05 and 79,203.78 is: 109,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,792.41 : 187,416.05 = 79,203.78 : x
  2. Step 2: Convert to fraction form
    135,792.41/187,416.05 = 79,203.78/x
  3. Step 3: Cross multiply
    135,792.41x = 187,416.05 × 79,203.78
  4. Step 4: Simplify right side
    135,792.41x = 14,844,059,592.67
  5. Step 5: Solve for x
    x = 14,844,059,592.67/135,792.41
  6. Step 6: Final answer
    x = 109,314.35

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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.