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Finding the Fourth Proportional to 115,858.02, 159,886.49 and 65,557.02

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Solution

The fourth proportional to 115,858.02, 159,886.49 and 65,557.02 is: 90,470.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,858.02 : 159,886.49 = 65,557.02 : x
  2. Step 2: Convert to fraction form
    115,858.02/159,886.49 = 65,557.02/x
  3. Step 3: Cross multiply
    115,858.02x = 159,886.49 × 65,557.02
  4. Step 4: Simplify right side
    115,858.02x = 10,481,681,822.66
  5. Step 5: Solve for x
    x = 10,481,681,822.66/115,858.02
  6. Step 6: Final answer
    x = 90,470.06

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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.