Home / 136,122.84-187,821.86-79,523.28

Finding the Fourth Proportional to 136,122.84, 187,821.86 and 79,523.28

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Solution

The fourth proportional to 136,122.84, 187,821.86 and 79,523.28 is: 109,725.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,122.84 : 187,821.86 = 79,523.28 : x
  2. Step 2: Convert to fraction form
    136,122.84/187,821.86 = 79,523.28/x
  3. Step 3: Cross multiply
    136,122.84x = 187,821.86 × 79,523.28
  4. Step 4: Simplify right side
    136,122.84x = 14,936,209,965.28
  5. Step 5: Solve for x
    x = 14,936,209,965.28/136,122.84
  6. Step 6: Final answer
    x = 109,725.96

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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.