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Finding the Fourth Proportional to 149,602.54, 206,469.76 and 85,940.18

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Solution

The fourth proportional to 149,602.54, 206,469.76 and 85,940.18 is: 118,607.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,602.54 : 206,469.76 = 85,940.18 : x
  2. Step 2: Convert to fraction form
    149,602.54/206,469.76 = 85,940.18/x
  3. Step 3: Cross multiply
    149,602.54x = 206,469.76 × 85,940.18
  4. Step 4: Simplify right side
    149,602.54x = 17,744,048,338.96
  5. Step 5: Solve for x
    x = 17,744,048,338.96/149,602.54
  6. Step 6: Final answer
    x = 118,607.93

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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.