Home / 149,748.55-206,661.36-81,771.85

Finding the Fourth Proportional to 149,748.55, 206,661.36 and 81,771.85

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Solution

The fourth proportional to 149,748.55, 206,661.36 and 81,771.85 is: 112,849.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,748.55 : 206,661.36 = 81,771.85 : x
  2. Step 2: Convert to fraction form
    149,748.55/206,661.36 = 81,771.85/x
  3. Step 3: Cross multiply
    149,748.55x = 206,661.36 × 81,771.85
  4. Step 4: Simplify right side
    149,748.55x = 16,899,081,730.72
  5. Step 5: Solve for x
    x = 16,899,081,730.72/149,748.55
  6. Step 6: Final answer
    x = 112,849.72

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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.