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Finding the Fourth Proportional to 129,745.96, 179,055.66 and 73,156.12

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Solution

The fourth proportional to 129,745.96, 179,055.66 and 73,156.12 is: 100,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,745.96 : 179,055.66 = 73,156.12 : x
  2. Step 2: Convert to fraction form
    129,745.96/179,055.66 = 73,156.12/x
  3. Step 3: Cross multiply
    129,745.96x = 179,055.66 × 73,156.12
  4. Step 4: Simplify right side
    129,745.96x = 13,099,017,349.64
  5. Step 5: Solve for x
    x = 13,099,017,349.64/129,745.96
  6. Step 6: Final answer
    x = 100,958.96

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1.5x scale

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.