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Finding the Fourth Proportional to 149,544, 206,372.54 and 85,887.72

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Solution

The fourth proportional to 149,544, 206,372.54 and 85,887.72 is: 118,526.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,544 : 206,372.54 = 85,887.72 : x
  2. Step 2: Convert to fraction form
    149,544/206,372.54 = 85,887.72/x
  3. Step 3: Cross multiply
    149,544x = 206,372.54 × 85,887.72
  4. Step 4: Simplify right side
    149,544x = 17,724,867,145.93
  5. Step 5: Solve for x
    x = 17,724,867,145.93/149,544
  6. Step 6: Final answer
    x = 118,526.10

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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.