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Finding the Fourth Proportional to 101,089.48, 151,736.70 and 91,161.16

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Solution

The fourth proportional to 101,089.48, 151,736.70 and 91,161.16 is: 136,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,089.48 : 151,736.70 = 91,161.16 : x
  2. Step 2: Convert to fraction form
    101,089.48/151,736.70 = 91,161.16/x
  3. Step 3: Cross multiply
    101,089.48x = 151,736.70 × 91,161.16
  4. Step 4: Simplify right side
    101,089.48x = 13,832,493,586.57
  5. Step 5: Solve for x
    x = 13,832,493,586.57/101,089.48
  6. Step 6: Final answer
    x = 136,834.16

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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.