Home / 129,173.11-193,655.10-40,380.91

Finding the Fourth Proportional to 129,173.11, 193,655.10 and 40,380.91

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Solution

The fourth proportional to 129,173.11, 193,655.10 and 40,380.91 is: 60,538.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,173.11 : 193,655.10 = 40,380.91 : x
  2. Step 2: Convert to fraction form
    129,173.11/193,655.10 = 40,380.91/x
  3. Step 3: Cross multiply
    129,173.11x = 193,655.10 × 40,380.91
  4. Step 4: Simplify right side
    129,173.11x = 7,819,968,831.43
  5. Step 5: Solve for x
    x = 7,819,968,831.43/129,173.11
  6. Step 6: Final answer
    x = 60,538.68

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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.