Home / 115,451.64-159,349.83-67,720.37

Finding the Fourth Proportional to 115,451.64, 159,349.83 and 67,720.37

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Solution

The fourth proportional to 115,451.64, 159,349.83 and 67,720.37 is: 93,469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,451.64 : 159,349.83 = 67,720.37 : x
  2. Step 2: Convert to fraction form
    115,451.64/159,349.83 = 67,720.37/x
  3. Step 3: Cross multiply
    115,451.64x = 159,349.83 × 67,720.37
  4. Step 4: Simplify right side
    115,451.64x = 10,791,228,311.69
  5. Step 5: Solve for x
    x = 10,791,228,311.69/115,451.64
  6. Step 6: Final answer
    x = 93,469.68

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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.