Home / 129,554.15-193,892.28-79,665.84

Finding the Fourth Proportional to 129,554.15, 193,892.28 and 79,665.84

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Solution

The fourth proportional to 129,554.15, 193,892.28 and 79,665.84 is: 119,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,554.15 : 193,892.28 = 79,665.84 : x
  2. Step 2: Convert to fraction form
    129,554.15/193,892.28 = 79,665.84/x
  3. Step 3: Cross multiply
    129,554.15x = 193,892.28 × 79,665.84
  4. Step 4: Simplify right side
    129,554.15x = 15,446,591,355.72
  5. Step 5: Solve for x
    x = 15,446,591,355.72/129,554.15
  6. Step 6: Final answer
    x = 119,228.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.