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Finding the Fourth Proportional to 149,687.16, 206,602.98 and 98,709.10

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Solution

The fourth proportional to 149,687.16, 206,602.98 and 98,709.10 is: 136,241.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,687.16 : 206,602.98 = 98,709.10 : x
  2. Step 2: Convert to fraction form
    149,687.16/206,602.98 = 98,709.10/x
  3. Step 3: Cross multiply
    149,687.16x = 206,602.98 × 98,709.10
  4. Step 4: Simplify right side
    149,687.16x = 20,393,593,604.07
  5. Step 5: Solve for x
    x = 20,393,593,604.07/149,687.16
  6. Step 6: Final answer
    x = 136,241.44

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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.