Home / 129,477.21-194,132.78-89,383.86

Finding the Fourth Proportional to 129,477.21, 194,132.78 and 89,383.86

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Solution

The fourth proportional to 129,477.21, 194,132.78 and 89,383.86 is: 134,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,477.21 : 194,132.78 = 89,383.86 : x
  2. Step 2: Convert to fraction form
    129,477.21/194,132.78 = 89,383.86/x
  3. Step 3: Cross multiply
    129,477.21x = 194,132.78 × 89,383.86
  4. Step 4: Simplify right side
    129,477.21x = 17,352,337,228.93
  5. Step 5: Solve for x
    x = 17,352,337,228.93/129,477.21
  6. Step 6: Final answer
    x = 134,018.47

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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.