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Finding the Fourth Proportional to 149,559.91, 206,392.82 and 85,910.01

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Solution

The fourth proportional to 149,559.91, 206,392.82 and 85,910.01 is: 118,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,559.91 : 206,392.82 = 85,910.01 : x
  2. Step 2: Convert to fraction form
    149,559.91/206,392.82 = 85,910.01/x
  3. Step 3: Cross multiply
    149,559.91x = 206,392.82 × 85,910.01
  4. Step 4: Simplify right side
    149,559.91x = 17,731,209,230.13
  5. Step 5: Solve for x
    x = 17,731,209,230.13/149,559.91
  6. Step 6: Final answer
    x = 118,555.90

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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.