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Finding the Fourth Proportional to 129,903.26, 179,262.87 and 73,319.90

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Solution

The fourth proportional to 129,903.26, 179,262.87 and 73,319.90 is: 101,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,903.26 : 179,262.87 = 73,319.90 : x
  2. Step 2: Convert to fraction form
    129,903.26/179,262.87 = 73,319.90/x
  3. Step 3: Cross multiply
    129,903.26x = 179,262.87 × 73,319.90
  4. Step 4: Simplify right side
    129,903.26x = 13,143,535,702.11
  5. Step 5: Solve for x
    x = 13,143,535,702.11/129,903.26
  6. Step 6: Final answer
    x = 101,179.41

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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.