Home / 129,942.89-179,319.26-72,583.01

Finding the Fourth Proportional to 129,942.89, 179,319.26 and 72,583.01

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Solution

The fourth proportional to 129,942.89, 179,319.26 and 72,583.01 is: 100,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,942.89 : 179,319.26 = 72,583.01 : x
  2. Step 2: Convert to fraction form
    129,942.89/179,319.26 = 72,583.01/x
  3. Step 3: Cross multiply
    129,942.89x = 179,319.26 × 72,583.01
  4. Step 4: Simplify right side
    129,942.89x = 13,015,532,271.53
  5. Step 5: Solve for x
    x = 13,015,532,271.53/129,942.89
  6. Step 6: Final answer
    x = 100,163.48

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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.