Home / 129,919.68-179,285.76-72,557.44

Finding the Fourth Proportional to 129,919.68, 179,285.76 and 72,557.44

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Solution

The fourth proportional to 129,919.68, 179,285.76 and 72,557.44 is: 100,127.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,919.68 : 179,285.76 = 72,557.44 : x
  2. Step 2: Convert to fraction form
    129,919.68/179,285.76 = 72,557.44/x
  3. Step 3: Cross multiply
    129,919.68x = 179,285.76 × 72,557.44
  4. Step 4: Simplify right side
    129,919.68x = 13,008,515,774.05
  5. Step 5: Solve for x
    x = 13,008,515,774.05/129,919.68
  6. Step 6: Final answer
    x = 100,127.37

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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.