Home / 135,792.78-187,416.57-79,204.17

Finding the Fourth Proportional to 135,792.78, 187,416.57 and 79,204.17

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Solution

The fourth proportional to 135,792.78, 187,416.57 and 79,204.17 is: 109,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,792.78 : 187,416.57 = 79,204.17 : x
  2. Step 2: Convert to fraction form
    135,792.78/187,416.57 = 79,204.17/x
  3. Step 3: Cross multiply
    135,792.78x = 187,416.57 × 79,204.17
  4. Step 4: Simplify right side
    135,792.78x = 14,844,173,871.10
  5. Step 5: Solve for x
    x = 14,844,173,871.10/135,792.78
  6. Step 6: Final answer
    x = 109,314.90

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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.