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Finding the Fourth Proportional to 101,702.48, 140,405.30 and 69,485.54

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Solution

The fourth proportional to 101,702.48, 140,405.30 and 69,485.54 is: 95,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,702.48 : 140,405.30 = 69,485.54 : x
  2. Step 2: Convert to fraction form
    101,702.48/140,405.30 = 69,485.54/x
  3. Step 3: Cross multiply
    101,702.48x = 140,405.30 × 69,485.54
  4. Step 4: Simplify right side
    101,702.48x = 9,756,138,089.36
  5. Step 5: Solve for x
    x = 9,756,138,089.36/101,702.48
  6. Step 6: Final answer
    x = 95,928.22

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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.