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Finding the Fourth Proportional to 149,703.89, 206,626.10 and 98,725.82

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Solution

The fourth proportional to 149,703.89, 206,626.10 and 98,725.82 is: 136,264.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,703.89 : 206,626.10 = 98,725.82 : x
  2. Step 2: Convert to fraction form
    149,703.89/206,626.10 = 98,725.82/x
  3. Step 3: Cross multiply
    149,703.89x = 206,626.10 × 98,725.82
  4. Step 4: Simplify right side
    149,703.89x = 20,399,329,629.14
  5. Step 5: Solve for x
    x = 20,399,329,629.14/149,703.89
  6. Step 6: Final answer
    x = 136,264.53

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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.