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Finding the Fourth Proportional to 108,881.88, 150,273.27 and 66,465.06

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Solution

The fourth proportional to 108,881.88, 150,273.27 and 66,465.06 is: 91,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,881.88 : 150,273.27 = 66,465.06 : x
  2. Step 2: Convert to fraction form
    108,881.88/150,273.27 = 66,465.06/x
  3. Step 3: Cross multiply
    108,881.88x = 150,273.27 × 66,465.06
  4. Step 4: Simplify right side
    108,881.88x = 9,987,921,906.95
  5. Step 5: Solve for x
    x = 9,987,921,906.95/108,881.88
  6. Step 6: Final answer
    x = 91,731.72

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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.