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Finding the Fourth Proportional to 101,136.84, 151,538.56 and 90,707.83

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Solution

The fourth proportional to 101,136.84, 151,538.56 and 90,707.83 is: 135,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,136.84 : 151,538.56 = 90,707.83 : x
  2. Step 2: Convert to fraction form
    101,136.84/151,538.56 = 90,707.83/x
  3. Step 3: Cross multiply
    101,136.84x = 151,538.56 × 90,707.83
  4. Step 4: Simplify right side
    101,136.84x = 13,745,733,706.61
  5. Step 5: Solve for x
    x = 13,745,733,706.61/101,136.84
  6. Step 6: Final answer
    x = 135,912.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.