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Finding the Fourth Proportional to 115,810.56, 159,817.05 and 65,509.56

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Solution

The fourth proportional to 115,810.56, 159,817.05 and 65,509.56 is: 90,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,810.56 : 159,817.05 = 65,509.56 : x
  2. Step 2: Convert to fraction form
    115,810.56/159,817.05 = 65,509.56/x
  3. Step 3: Cross multiply
    115,810.56x = 159,817.05 × 65,509.56
  4. Step 4: Simplify right side
    115,810.56x = 10,469,544,626.00
  5. Step 5: Solve for x
    x = 10,469,544,626.00/115,810.56
  6. Step 6: Final answer
    x = 90,402.33

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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.