Home / 129,675.52-178,949.01-72,325.09

Finding the Fourth Proportional to 129,675.52, 178,949.01 and 72,325.09

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Solution

The fourth proportional to 129,675.52, 178,949.01 and 72,325.09 is: 99,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,675.52 : 178,949.01 = 72,325.09 : x
  2. Step 2: Convert to fraction form
    129,675.52/178,949.01 = 72,325.09/x
  3. Step 3: Cross multiply
    129,675.52x = 178,949.01 × 72,325.09
  4. Step 4: Simplify right side
    129,675.52x = 12,942,503,253.66
  5. Step 5: Solve for x
    x = 12,942,503,253.66/129,675.52
  6. Step 6: Final answer
    x = 99,806.84

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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.