Home / 135,920.84-187,571.94-79,321.16

Finding the Fourth Proportional to 135,920.84, 187,571.94 and 79,321.16

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Solution

The fourth proportional to 135,920.84, 187,571.94 and 79,321.16 is: 109,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,920.84 : 187,571.94 = 79,321.16 : x
  2. Step 2: Convert to fraction form
    135,920.84/187,571.94 = 79,321.16/x
  3. Step 3: Cross multiply
    135,920.84x = 187,571.94 × 79,321.16
  4. Step 4: Simplify right side
    135,920.84x = 14,878,423,864.25
  5. Step 5: Solve for x
    x = 14,878,423,864.25/135,920.84
  6. Step 6: Final answer
    x = 109,463.89

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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.