Home / 135,936.72-187,561.80-79,356.24

Finding the Fourth Proportional to 135,936.72, 187,561.80 and 79,356.24

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Solution

The fourth proportional to 135,936.72, 187,561.80 and 79,356.24 is: 109,493.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,936.72 : 187,561.80 = 79,356.24 : x
  2. Step 2: Convert to fraction form
    135,936.72/187,561.80 = 79,356.24/x
  3. Step 3: Cross multiply
    135,936.72x = 187,561.80 × 79,356.24
  4. Step 4: Simplify right side
    135,936.72x = 14,884,199,215.63
  5. Step 5: Solve for x
    x = 14,884,199,215.63/135,936.72
  6. Step 6: Final answer
    x = 109,493.59

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1.5x scale

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.