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Finding the Fourth Proportional to 117,485.13, 162,125.13 and 63,769.00

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Solution

The fourth proportional to 117,485.13, 162,125.13 and 63,769.00 is: 87,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,485.13 : 162,125.13 = 63,769.00 : x
  2. Step 2: Convert to fraction form
    117,485.13/162,125.13 = 63,769.00/x
  3. Step 3: Cross multiply
    117,485.13x = 162,125.13 × 63,769.00
  4. Step 4: Simplify right side
    117,485.13x = 10,338,557,009.66
  5. Step 5: Solve for x
    x = 10,338,557,009.66/117,485.13
  6. Step 6: Final answer
    x = 87,998.86

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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.