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Finding the Fourth Proportional to 101,640.24, 152,129.16 and 91,940.40

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Solution

The fourth proportional to 101,640.24, 152,129.16 and 91,940.40 is: 137,611.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,640.24 : 152,129.16 = 91,940.40 : x
  2. Step 2: Convert to fraction form
    101,640.24/152,129.16 = 91,940.40/x
  3. Step 3: Cross multiply
    101,640.24x = 152,129.16 × 91,940.40
  4. Step 4: Simplify right side
    101,640.24x = 13,986,815,822.06
  5. Step 5: Solve for x
    x = 13,986,815,822.06/101,640.24
  6. Step 6: Final answer
    x = 137,611.01

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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.