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Finding the Fourth Proportional to 129,893.76, 179,249.76 and 73,310.40

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Solution

The fourth proportional to 129,893.76, 179,249.76 and 73,310.40 is: 101,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,893.76 : 179,249.76 = 73,310.40 : x
  2. Step 2: Convert to fraction form
    129,893.76/179,249.76 = 73,310.40/x
  3. Step 3: Cross multiply
    129,893.76x = 179,249.76 × 73,310.40
  4. Step 4: Simplify right side
    129,893.76x = 13,140,871,605.50
  5. Step 5: Solve for x
    x = 13,140,871,605.50/129,893.76
  6. Step 6: Final answer
    x = 101,166.30

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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.