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Finding the Fourth Proportional to 149,656.91, 206,531.37 and 85,124.48

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Solution

The fourth proportional to 149,656.91, 206,531.37 and 85,124.48 is: 117,474.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,656.91 : 206,531.37 = 85,124.48 : x
  2. Step 2: Convert to fraction form
    149,656.91/206,531.37 = 85,124.48/x
  3. Step 3: Cross multiply
    149,656.91x = 206,531.37 × 85,124.48
  4. Step 4: Simplify right side
    149,656.91x = 17,580,875,991.27
  5. Step 5: Solve for x
    x = 17,580,875,991.27/149,656.91
  6. Step 6: Final answer
    x = 117,474.53

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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.