Home / 129,604.14-178,861.95-97,716.78

Finding the Fourth Proportional to 129,604.14, 178,861.95 and 97,716.78

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Solution

The fourth proportional to 129,604.14, 178,861.95 and 97,716.78 is: 134,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,604.14 : 178,861.95 = 97,716.78 : x
  2. Step 2: Convert to fraction form
    129,604.14/178,861.95 = 97,716.78/x
  3. Step 3: Cross multiply
    129,604.14x = 178,861.95 × 97,716.78
  4. Step 4: Simplify right side
    129,604.14x = 17,477,813,818.52
  5. Step 5: Solve for x
    x = 17,477,813,818.52/129,604.14
  6. Step 6: Final answer
    x = 134,855.37

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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.