Home / 129,173.92-193,656.32-40,381.72

Finding the Fourth Proportional to 129,173.92, 193,656.32 and 40,381.72

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Solution

The fourth proportional to 129,173.92, 193,656.32 and 40,381.72 is: 60,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,173.92 : 193,656.32 = 40,381.72 : x
  2. Step 2: Convert to fraction form
    129,173.92/193,656.32 = 40,381.72/x
  3. Step 3: Cross multiply
    129,173.92x = 193,656.32 × 40,381.72
  4. Step 4: Simplify right side
    129,173.92x = 7,820,175,391.42
  5. Step 5: Solve for x
    x = 7,820,175,391.42/129,173.92
  6. Step 6: Final answer
    x = 60,539.89

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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.