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Finding the Fourth Proportional to 149,602.76, 206,431.33 and 85,940.54

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Solution

The fourth proportional to 149,602.76, 206,431.33 and 85,940.54 is: 118,586.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,602.76 : 206,431.33 = 85,940.54 : x
  2. Step 2: Convert to fraction form
    149,602.76/206,431.33 = 85,940.54/x
  3. Step 3: Cross multiply
    149,602.76x = 206,431.33 × 85,940.54
  4. Step 4: Simplify right side
    149,602.76x = 17,740,819,973.12
  5. Step 5: Solve for x
    x = 17,740,819,973.12/149,602.76
  6. Step 6: Final answer
    x = 118,586.18

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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.