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Finding the Fourth Proportional to 115,856.02, 159,883.73 and 65,555.02

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Solution

The fourth proportional to 115,856.02, 159,883.73 and 65,555.02 is: 90,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,856.02 : 159,883.73 = 65,555.02 : x
  2. Step 2: Convert to fraction form
    115,856.02/159,883.73 = 65,555.02/x
  3. Step 3: Cross multiply
    115,856.02x = 159,883.73 × 65,555.02
  4. Step 4: Simplify right side
    115,856.02x = 10,481,181,117.82
  5. Step 5: Solve for x
    x = 10,481,181,117.82/115,856.02
  6. Step 6: Final answer
    x = 90,467.30

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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.