Home / 129,175.26-178,267.14-72,586.50

Finding the Fourth Proportional to 129,175.26, 178,267.14 and 72,586.50

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Solution

The fourth proportional to 129,175.26, 178,267.14 and 72,586.50 is: 100,172.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,175.26 : 178,267.14 = 72,586.50 : x
  2. Step 2: Convert to fraction form
    129,175.26/178,267.14 = 72,586.50/x
  3. Step 3: Cross multiply
    129,175.26x = 178,267.14 × 72,586.50
  4. Step 4: Simplify right side
    129,175.26x = 12,939,787,757.61
  5. Step 5: Solve for x
    x = 12,939,787,757.61/129,175.26
  6. Step 6: Final answer
    x = 100,172.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.