Home / 129,933.68-179,321.11-78,935.27

Finding the Fourth Proportional to 129,933.68, 179,321.11 and 78,935.27

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Solution

The fourth proportional to 129,933.68, 179,321.11 and 78,935.27 is: 108,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,933.68 : 179,321.11 = 78,935.27 : x
  2. Step 2: Convert to fraction form
    129,933.68/179,321.11 = 78,935.27/x
  3. Step 3: Cross multiply
    129,933.68x = 179,321.11 × 78,935.27
  4. Step 4: Simplify right side
    129,933.68x = 14,154,759,140.61
  5. Step 5: Solve for x
    x = 14,154,759,140.61/129,933.68
  6. Step 6: Final answer
    x = 108,938.34

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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.