Home / 135,824.56-187,437.84-79,225

Finding the Fourth Proportional to 135,824.56, 187,437.84 and 79,225

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Solution

The fourth proportional to 135,824.56, 187,437.84 and 79,225 is: 109,330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,824.56 : 187,437.84 = 79,225 : x
  2. Step 2: Convert to fraction form
    135,824.56/187,437.84 = 79,225/x
  3. Step 3: Cross multiply
    135,824.56x = 187,437.84 × 79,225
  4. Step 4: Simplify right side
    135,824.56x = 14,849,762,874
  5. Step 5: Solve for x
    x = 14,849,762,874/135,824.56
  6. Step 6: Final answer
    x = 109,330.47

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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.