Home / 149,581.91-206,419.41-85,923.80

Finding the Fourth Proportional to 149,581.91, 206,419.41 and 85,923.80

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Solution

The fourth proportional to 149,581.91, 206,419.41 and 85,923.80 is: 118,572.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,581.91 : 206,419.41 = 85,923.80 : x
  2. Step 2: Convert to fraction form
    149,581.91/206,419.41 = 85,923.80/x
  3. Step 3: Cross multiply
    149,581.91x = 206,419.41 × 85,923.80
  4. Step 4: Simplify right side
    149,581.91x = 17,736,339,068.86
  5. Step 5: Solve for x
    x = 17,736,339,068.86/149,581.91
  6. Step 6: Final answer
    x = 118,572.76

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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.