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Finding the Fourth Proportional to 101,970.86, 140,770.96 and 63,751.64

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Solution

The fourth proportional to 101,970.86, 140,770.96 and 63,751.64 is: 88,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,970.86 : 140,770.96 = 63,751.64 : x
  2. Step 2: Convert to fraction form
    101,970.86/140,770.96 = 63,751.64/x
  3. Step 3: Cross multiply
    101,970.86x = 140,770.96 × 63,751.64
  4. Step 4: Simplify right side
    101,970.86x = 8,974,379,564.37
  5. Step 5: Solve for x
    x = 8,974,379,564.37/101,970.86
  6. Step 6: Final answer
    x = 88,009.26

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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.